DE143542C - - Google Patents
Info
- Publication number
- DE143542C DE143542C DENDAT143542D DE143542DA DE143542C DE 143542 C DE143542 C DE 143542C DE NDAT143542 D DENDAT143542 D DE NDAT143542D DE 143542D A DE143542D A DE 143542DA DE 143542 C DE143542 C DE 143542C
- Authority
- DE
- Germany
- Prior art keywords
- lead
- clamping devices
- clamping device
- clamping
- resilient
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 210000002105 tongue Anatomy 0.000 claims description 6
- 239000012858 resilient material Substances 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B43—WRITING OR DRAWING IMPLEMENTS; BUREAU ACCESSORIES
- B43K—IMPLEMENTS FOR WRITING OR DRAWING
- B43K21/00—Propelling pencils
- B43K21/02—Writing-core feeding mechanisms
- B43K21/16—Writing-core feeding mechanisms with stepwise feed of writing-cores
Landscapes
- Mechanical Pencils And Projecting And Retracting Systems Therefor, And Multi-System Writing Instruments (AREA)
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DE143542C true DE143542C (en:Method) |
Family
ID=411030
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DENDAT143542D Active DE143542C (en:Method) |
Country Status (1)
| Country | Link |
|---|---|
| DE (1) | DE143542C (en:Method) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4381213A (en) * | 1980-12-15 | 1983-04-26 | Motorola, Inc. | Partial vacuum boron diffusion process |
| US4521441A (en) * | 1983-12-19 | 1985-06-04 | Motorola, Inc. | Plasma enhanced diffusion process |
-
0
- DE DENDAT143542D patent/DE143542C/de active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4381213A (en) * | 1980-12-15 | 1983-04-26 | Motorola, Inc. | Partial vacuum boron diffusion process |
| US4521441A (en) * | 1983-12-19 | 1985-06-04 | Motorola, Inc. | Plasma enhanced diffusion process |
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