| Patents for 1991 (697) |
|---|
| 04/10/1991 | CN1050631A Decoding control circuits for household computerized tv game playing machine |
| 04/10/1991 | CN1050592A Inner damper rotary compressor |
| 04/10/1991 | CN1012322B Membrane/electrode compound structure with interconnected channels formed by catalytic active particles |
| 04/05/1991 | CN2095120U High-stability for self-dumping semi-integrated |
| 04/04/1991 | CA2000125A1 Renewable cap attached to a writing instrument |
| 04/04/1991 | CA2000124A1 Renewable cap attached to a writing instrument |
| 04/03/1991 | CN2074517U Ac speed regulator |
| 04/03/1991 | CN2074493U Open-circuit protector of current transformer |
| 04/03/1991 | CN2074416U Colour-changeable decorative lamp |
| 04/03/1991 | CN2074414U Wearing-type batteries-saving flash lamp |
| 04/03/1991 | CN2074413U Multifunction lamp |
| 04/03/1991 | CN2074380U Energy-saving foot valve |
| 04/03/1991 | CN2074361U Rock drill of dump truck |
| 04/03/1991 | CN2074151U Magnetized water shower |
| 04/03/1991 | CN2074150U Movable simple electric heating shower |
| 04/03/1991 | CN1050452A Bionical information processing apparatus |
| 04/03/1991 | CN1050361A Method for easily going upstairs or downstairs by attaching elevator to outer wall |
| 04/03/1991 | CN1050357A Vehicle energy-saving system with recovery of unidirectional drive kinetic energy |
| 04/03/1991 | CN1050326A Process for preparing injection of bitter cassia holo-element |
| 04/03/1991 | CN1050325A Medicinal cord (pill) for curing apoplexy by cooperation with acupuncture and moxibustion and acupuncture point pressing |
| 04/03/1991 | CN1050323A Process for preparation and fresh keeping of concentrated pure ginseng juice |
| 04/03/1991 | CN1050322A Process for preparing medicine extracted from ginseng and its fresh keeping |
| 04/03/1991 | CN1050308A Popsicle powder and production technology thereof |
| 04/03/1991 | CN1012259B Natural make-up perfume for removing offensive odour |
| 03/27/1991 | CN2074080U Differential speed-regulated self-controlled driving device |
| 03/27/1991 | CN2074029U Recording instrument for testing vaccine cold storage temp. |
| 03/27/1991 | CN2073978U External hot-air coal dust cyclone combustion chamber |
| 03/27/1991 | CN2073974U Multifunctional low voltage energy-saving traffic signal lamp |
| 03/27/1991 | CN2073973U Glasses type lighting installation |
| 03/27/1991 | CN2073719U Gaseous sanitary flusher |
| 03/27/1991 | CN1050275A Teach-yourself traffic controlling machine |
| 03/27/1991 | CN1050197A Extraction method for silk protein from silk waste of carpet |
| 03/27/1991 | CN1050138A Effective remedy for duck pest-"yawenling" |
| 03/27/1991 | CN1050136A Cosmetics for refreshing foot and the preparation method thereof |
| 03/27/1991 | CN1012247B Frequency-dividing and governing method of alternating current asynchronous motor |
| 03/27/1991 | CN1012246B Plus-minus slip ratio speed governing method of acasynchronous motor and its equipemnt |
| 03/27/1991 | CN1012226B Extracting technique of resource satellite data message and its application |
| 03/20/1991 | CN2073602U Ciphered equipment of bank microcomputer's business |
| 03/20/1991 | CN2073546U Gasification combusting stoves using biological fuels |
| 03/20/1991 | CN2073545U Stove inner part with multi functions and high efficiency |
| 03/20/1991 | CN2073533U Improved structure of police using indicators |
| 03/20/1991 | CN2073531U Power supply for miner's lamp |
| 03/20/1991 | CN2073340U Machine tool hydraulic driver without stress |
| 03/20/1991 | CN2073293U Set of blood taking samples preserving blood for long time |
| 03/20/1991 | CN2073279U Domestic auto-shower appliance |
| 03/20/1991 | CN1050102A Check discriminating system |
| 03/20/1991 | CN1050099A Work station and method for operation thereof |
| 03/20/1991 | CN1050036A Solid-phase free drilling liquor and its production process |
| 03/20/1991 | CN1049972A Preparation of quick-acting stomach capsule |
| 03/20/1991 | CN1012117B Metal-oxide-semiconductor type field-effect transistor |
| 03/19/1991 | CA1281780C Electrosurgery cauterizing blade with vibration transducer in handle |
| 03/19/1991 | CA1281779C2 Electrosurgery cauterizing blade with conductive pad to contact handle |
| 03/14/1991 | CA2025205A1 Method and apparatus for dispensing money orders |
| 03/13/1991 | CN2073193U Lacour speed governor of multiple motors shunt |
| 03/13/1991 | CN2073154U Oil-quenched voltage mutual-inductor with three-phase ard five-pole |
| 03/13/1991 | CN2073073U 荧光灯灯具 Fluorescent lamps |
| 03/13/1991 | CN2073071U Attracted disc automobile alarm lamp |
| 03/13/1991 | CN2073070U 旋转式舞台灯 Rotary stage lights |
| 03/13/1991 | CN2073031U Vaccum absorption seat of concret driller |
| 03/13/1991 | CN2072828U Electrical condenser with variable constant current for high frequency electrical |
| 03/13/1991 | CN2072827U One-way vaginal speculum with double wings |
| 03/13/1991 | CN1049924A Computer on line |
| 03/13/1991 | CN1049781A Laser operating device for intravascular surgery |
| 03/13/1991 | CN1011947B Precontrolling-monitoring method of thickness base point for plate and strip rolling |
| 03/12/1991 | CA1281429C Method using a programmed digital computer system for translation between natural languages |
| 03/06/1991 | CN2072748U Alternating current slip-rings asynchronous motor stepless speed regulating device |
| 03/06/1991 | CN2072747U Energy-saving automatic controller of asynchronous motor |
| 03/06/1991 | CN2072746U Electronic stepless speed regulating blower |
| 03/06/1991 | CN2072722U Stereoscopic radiation type three-phase arc welding transformer |
| 03/06/1991 | CN2072635U Fishing lamp |
| 03/06/1991 | CN2072560U High working platform with automatic flat-adjustable function |
| 03/06/1991 | CN2072380U Folding bathroom |
| 03/06/1991 | CN2072379U Waste heat shower unit |
| 03/06/1991 | CN2072378U Shower unit |
| 03/06/1991 | CN2072377U Infrared reflecting automatic shower unit |
| 03/06/1991 | CN1049711A High efficiency combustion stove for solid fuel |
| 03/06/1991 | CN1049644A Enhancement process for figure trasmission end made of optical fiber |
| 03/06/1991 | CN1049621A Apparatus for firming by gas flow shock |
| 03/06/1991 | CN1049610A Method for preparing medicinal for rheumatism patient |
| 03/05/1991 | CA1281141C Construction means and method with depiction of structure |
| 02/28/1991 | CA2009654A1 Method of predicting drill bit performance |
| 02/27/1991 | CN2072311U Single-end internal starting fluorescent lamp electronic rectifier |
| 02/27/1991 | CN2072310U Energy saving transformer for neon lamp |
| 02/27/1991 | CN2072309U High-frequency electronic ballast capable of preventing surge voltage |
| 02/27/1991 | CN2072191U Slag cooling device for boiling bed |
| 02/27/1991 | CN2072190U Glasses type lamp for reading books |
| 02/27/1991 | CN2072188U Multipurpose electric torch |
| 02/27/1991 | CN2072084U Automatic temp. controller for tower of distillation and rectification of wine |
| 02/27/1991 | CN1049556A Solar energy generator with condensed light heat collector |
| 02/27/1991 | CN1049454A Prepn. of special lubricant for men's use |
| 02/27/1991 | CN1049453A Preparation of medical liquid for osteohyperplasia |
| 02/27/1991 | CN1049452A Chicken medicine "fowl revival" and prepn. thereof |
| 02/27/1991 | CN1011816B Apparatus for storing and transforming energy |
| 02/26/1991 | CA1280574C Spiral staircase arrangement |
| 02/20/1991 | CN2071863U High-efficiency energy-saving electronic ballast |
| 02/20/1991 | CN2071862U Lamp socket type electronic ballast glow-starter |
| 02/20/1991 | CN2071825U Metallized capacitor for dry explosion-proof protection |
| 02/20/1991 | CN2071781U Multi-coordinate raster digital indicator |
| 02/20/1991 | CN2071747U Lamp base |
| 02/20/1991 | CN2071492U Convenient bath cabinet |