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)
09/1986
09/03/1986CN85200884U Finger-setting pen
08/1986
08/05/1986US4603991 Connector for propelling pencil
08/05/1986US4603990 Mechanical pencil with refill cartridge
07/1986
07/31/1986WO1986004300A1 Eversharp pencil
07/09/1986CN85201929U Step-by-step adjustable pencil
07/09/1986CN85200109U Automatic refill passing in and out pen
07/02/1986CA1206743A Pencil device for plotting machine
06/1986
06/17/1986US4595306 Pencil with sharpener
06/11/1986EP0184272A1 Lead delivery mechanism for a mechanical pencil
04/1986
04/22/1986US4583874 Knock-type propelling pencil with storage cartridge
03/1986
03/18/1986CA1201997A2 Propelling pencil
03/04/1986US4573817 Mechanical pencil
02/1986
02/18/1986US4571105 Lead engaging chuck mechanism for mechanical pencil
02/05/1986CN85201178U Multipoint pen
01/1986
01/15/1986EP0168122A1 Mechanical pencil and method of assembling the same
01/08/1986EP0166780A1 Writing instrument
12/1985
12/24/1985US4560297 Writing implement
12/10/1985CA1197811A1 Propelling pencil
10/1985
10/01/1985US4544296 Writing instrument
10/01/1985US4544295 Mechanical pencil with self-contained insert
09/1985
09/11/1985EP0154073A2 Mechanical pencil
09/10/1985US4540995 Pencil device for plotting machine
09/03/1985US4538934 Automatic lead advancing mechanism for a mechanical pencil
08/1985
08/28/1985EP0152671A2 Mechanical pencil equipped with lead-storing cartridge
08/14/1985EP0151456A2 Mechanical pencil
07/1985
07/18/1985WO1985003037A1 Writing instrument
06/1985
06/26/1985EP0146128A2 Automatic mechanical pencil
06/04/1985US4521126 Mechanical pencil
05/1985
05/07/1985US4515492 Writing implement and kit
04/1985
04/09/1985CA1185208A1 Continuous feed mechanical pencil
03/1985
03/19/1985US4505606 Mechanical pencil with self-tapping propelling nut and the method of producing same and propelling a lead contained therein
03/12/1985US4504163 Mechanical pencil with automatic lead advance
02/1985
02/19/1985US4500220 Mechanical pencil with removable lead feed cover
12/1984
12/25/1984US4490061 Writing instrument for automatic advancement and feed of leads
10/1984
10/23/1984US4478529 Writing implement with automatic lead projection
10/23/1984CA1176605A1 Mechanical pencil
10/17/1984EP0122198A1 Pencil plotting head for a draughting machine
07/1984
07/24/1984US4461590 Inertia pen
07/10/1984US4459057 Mechanical pencil with automatic lead advance
06/1984
06/05/1984US4452544 Mechanical pencil with automatic lead feed
05/1984
05/02/1984EP0107272A1 Mechanical pencil
03/1984
03/28/1984EP0103746A2 Dispensing device in the shape of a stick
11/1983
11/16/1983EP0093815A1 Propelling pencil
10/1983
10/25/1983US4411543 Self-feeding mechanical pencil
09/1983
09/14/1983EP0088318A2 Propelling pencil with an automatic feed for the lead depending on the writing pressure
07/1983
07/20/1983EP0083662A1 Push-button mechanical pencil
06/1983
06/29/1983EP0082594A2 Mechanical pencil
06/07/1983US4386865 Automatic sharp pencil
05/1983
05/10/1983US4382706 Mechanical pencil
03/1983
03/29/1983US4378171 Ball-point pen
03/15/1983US4376590 Writing implement
02/1983
02/03/1983WO1983000309A1 Push-button mechanical pencil
02/01/1983US4371277 Automatic pencil
12/1982
12/07/1982US4362410 Mechanical pencil
11/1982
11/30/1982CA1136580A1 Ball-point pen
11/23/1982US4360280 Mechanical pencil having a lead detector
11/16/1982US4359290 Writing instrument
11/09/1982US4358210 Mechanical pencil with chuck closing by normal writing grip
11/02/1982US4357117 Nib holder construction for writing implements
10/1982
10/19/1982US4354767 Mechanical pencil
10/05/1982US4352581 Mechanical pencil
10/05/1982US4352579 Writing implement
08/1982
08/24/1982US4346392 Plotting head for use in drawing machine
08/10/1982US4343558 Mechanical pencil
06/1982
06/15/1982US4334794 Self sharpening pencils
03/1982
03/23/1982US4320982 Writing implement
03/09/1982CA1119558A1 Press-type pencil
02/1982
02/16/1982US4315695 Inertia pen with slidable sleeve
02/09/1982CA1117902A1 Writing implement
01/1982
01/21/1982WO1982000115A1 Propelling pencil
12/1981
12/29/1981CA1115237A1 Pen construction
11/1981
11/10/1981US4299506 Mechanical pencil
08/1981
08/04/1981US4281939 Mechanical pencil
07/1981
07/29/1981EP0032651A1 Push type mechanical pencil
07/07/1981CA1104523A1 Writing implement
06/1981
06/30/1981US4275971 Mechanical pencil
06/02/1981US4270870 Mechanical pencil with chuck closing by normal writing grip
05/1981
05/26/1981US4269524 Mechanical pencil
04/1981
04/28/1981US4264227 Press-out type writing tool
04/08/1981EP0026277A1 Ball-point pen
04/08/1981EP0026212A1 Pen construction
02/1981
02/17/1981US4251163 Knock-out type automatic pencil
01/1981
01/27/1981US4247215 Mechanical pencil
12/1980
12/23/1980US4240759 Mechanical pencil having guides to match guides on a refill cartridge
12/09/1980US4238163 Magnetic writing implement
10/1980
10/28/1980US4230413 Mechanical pencil having collet guide
10/02/1980WO1980002011A1 Pen construction
09/1980
09/09/1980US4221491 Pen construction
08/1980
08/26/1980US4219282 Writing implement
08/19/1980US4218153 Mechanical pencil
07/1980
07/23/1980EP0013559A1 Writing instrument
07/08/1980US4211500 Tip-pushed type mechanical pencil
06/1980
06/03/1980US4205924 Mechanical pencil with lead-feeding device operable by forward shake of pencil
12/1979
12/25/1979US4180339 Mechanical pencil with automatic lead feed
10/1979
10/30/1979US4172673 Writing instrument using thin refill leads
10/16/1979US4171170 Automatic pencil
09/1979
09/18/1979CA1062662A1 Writing instrument with tapered coupling means between housing and mechanism
08/1979
08/21/1979US4165513 Signal-operated marking device
05/1979
05/08/1979US4153379 Knock-out type automatic pencil
04/1979
04/17/1979US4149813 Mechanical pencil with automatic and manual lead advance
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