Patents
Sitemap › B43 - Writing or drawing implements; Bureau accessories › B43K - Implements for writing or drawing › B43K 21 - Propelling pencils
Patents for B43K 21 - Propelling pencils (2,215)
12/1992
12/23/1992CN2125504U Mechanical auto pencil
12/23/1992CN2125503U Automatic core feeding mechanic auto-pencil on writing
12/22/1992CA1311723C Rotary knock type mechanical pencil
12/16/1992CN2124821U Sway lead advancing mechanical automatic pencil
12/15/1992US5171097 Mechanical pencil with lead-feeding device operable by forward shake
11/1992
11/25/1992CN2122734U Propelling pencil for drawing
11/25/1992CN2122733U Multi-functional propelling pencil
11/25/1992CN2122732U 自动铅笔 Automatic Pencil
11/24/1992US5165813 Container with snap-in chuck and chuck ring
11/24/1992US5165812 Lead writing instrument with selective locking of chuck
11/19/1992EP0513874A2 Writing tool
11/18/1992CN1066242A Direct slide and push type composite pen with shaft and spring plate
11/18/1992CN1066241A Direct slide type composite pen with coaxial spring plate fixing head
11/18/1992CN1066240A Direct slide turning disc type composite pen
11/18/1992CN1066239A Spring plate locating type composite pen
11/18/1992CN1066238A Direct slide and push type composite pen with two spring fixing heads
11/18/1992CN1066237A Direct slide and push type composite pen with coaxial spring plate
11/18/1992CN1066236A Poke type composite pen
11/18/1992CN1066235A Direct slide type composite pen with two fixing heads
11/18/1992CN1066234A Poke-turning type composite pen
11/18/1992CN1066233A Direct slide type composite pen with two spring fixing heads
11/18/1992CN1066232A Multi-purpose composite pen with two writing ends
11/18/1992CN1066231A Push and direct slide type turning disc composite pen
11/18/1992CN1066230A Push and direct slide type composite pen
11/18/1992CN1066229A Direct slide composite pen with double piston fixing head
11/18/1992CN1066228A Pull-turning disc type composite pen
11/18/1992CN1066227A Two writing cores composite pen with alter
11/18/1992CN1066226A Two writing cores composite pen
11/18/1992CN1066225A Push type composite pen with clamp head
11/18/1992CN1066224A Revolving shaft type composite pen
11/18/1992CN1066223A Push and turning type composite pen
11/18/1992CN1066222A Revolving stretching type composite pen with double pen ends
11/18/1992CN1066221A Turning type composite pen
11/18/1992CN1066220A Revolving type composite pen
11/18/1992CN1066219A Composite pen with composite sleeve
11/18/1992CN1066218A Two-purpose bladder composite pen with double spring plate
11/18/1992CN1066217A Two-purpose bladder poke-turning type composite pen
11/18/1992CN1066215A Two-purpose bladder single handle turning type composite pen
11/18/1992CN1066214A Two-purpose bladder composite pen with pivot and spring plate
11/18/1992CN1066212A Two-purpose bladder turning disc type composite pen
11/11/1992CN2121333U Propelling pencil
11/04/1992CN2120682U Presse structure of automatic pencil
10/1992
10/28/1992EP0510181A1 Applicator for soft materials
10/21/1992CN2119325U Propelling pencil with rectangular lead
10/21/1992CN2119324U Buffer for propelling pencil
10/07/1992CN2117994U Propelling drawing pencil with square writing core and multi-head
09/1992
09/29/1992US5150525 Drawing device for use in drafting machine
09/23/1992CN2116587U Automatic control propelling pencil
09/22/1992US5149219 Swing-type mechanical pencil
09/17/1992WO1992015462A1 Shaking type mechanical pencil
09/16/1992CN2115897U Screw type pencil
09/09/1992CN2115217U Propelling pencil with pre-chuck
09/09/1992CN2115216U Adjusting propelling pencil
09/02/1992CN2114565U Special moveable pencil for drawing
08/1992
08/26/1992CN2113887U Chuck of thin-core propelling pencil
08/19/1992CN2113161U Propelling pencil
08/18/1992US5139356 Side actuated writing implement
08/12/1992CN2112507U Special propelling pencil for reading answering paper by computer
08/12/1992CN2112506U Adjustable plastics full automatic pencil
07/1992
07/29/1992CN2111196U Writing implement
07/29/1992CN2111195U Propelling pencil
07/22/1992CN2110578U Controllable multifunctional automatic pencil
07/08/1992CN2109308U Propelling pencil for engineering drawing
07/01/1992CN2108628U Step moving propelling pencil
06/1992
06/25/1992DE4041315A1 Fibre printing device - comprises housing contg. printing fluid storage unit and set of printing points arranged in contact, one behind other
06/18/1992CA2032392A1 Lead refill cartridge for mechanical pencil
06/10/1992CN2106723U Short-distance writing pen capable of preventing spine bending automatically
06/03/1992CN2106076U Portable propelling pencil
05/1992
05/29/1992WO1992008387A1 Applicator for soft materials
05/21/1992DE4036817A1 Propelling pencil with replaceable cartridge - has cartridge propelling device located in front part of pencil
05/07/1992DE4034588A1 Tensioning mechanism in refill pen - consists of simple parts, and has long secure function
04/1992
04/15/1992CN1060256A Self-control propelling pencil
03/1992
03/24/1992US5098212 For pencil leads
03/18/1992CN2099029U Convenient pencil
02/1992
02/26/1992CN2097092U Thread pencil
02/25/1992US5090831 Writing instrument
02/12/1992CN2095772U No-chip adjustable standard drawing pencil
02/04/1992US5085534 Mechanical pencil lead protection pipe with protuberance
01/1992
01/08/1992CN2092437U Helical pushing-pulling-pressing type sandwich-core multiple purpose pen
01/08/1992CN2092434U Sliding type adjustable pencil
12/1991
12/18/1991CN2090777U Automatic propelling pencil
12/04/1991CN2089875U Pencil without peeling
11/1991
11/30/1991CA2017686A1 Automatic pencil
11/28/1991WO1991017694A1 Mechanical pencil
11/28/1991CA2079478A1 Mechanical pencil
11/27/1991CN2089410U Continuous automatic propelling pencil
11/13/1991EP0455902A1 Improved automatic pencil
11/06/1991CN2088043U Rotary six-colour propelling pencil
11/06/1991CN2088039U Nearsightedness-preventing pen
11/06/1991CN1055900A Multifunctional propelling pencil with sharpener
11/05/1991US5062727 Writing tool
10/1991
10/17/1991WO1991015371A1 Mechanical pencil
10/09/1991CN2086206U Multi-functional movable pen
10/02/1991CN2085738U Full-automatic propelling pencil without lead break
10/02/1991CN2085733U Drawing pencil holder without cutting
10/02/1991CN1014130B Fixed children's pencil
10/01/1991US5052838 Mechanical pencil
09/1991
09/25/1991EP0448377A1 Drawing device for use in drafting machine
09/25/1991CN2085304U Tommy gun type pencil
09/18/1991CN2084881U Dual-purpose drawing pencil
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