DE217132C - - Google Patents
Info
- Publication number
- DE217132C DE217132C DENDAT217132D DE217132DA DE217132C DE 217132 C DE217132 C DE 217132C DE NDAT217132 D DENDAT217132 D DE NDAT217132D DE 217132D A DE217132D A DE 217132DA DE 217132 C DE217132 C DE 217132C
- Authority
- DE
- Germany
- Prior art keywords
- pen
- head
- sound
- cutting edge
- curves
- 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
- 238000010586 diagram Methods 0.000 claims 1
- 239000000463 material Substances 0.000 claims 1
- 229910052594 sapphire Inorganic materials 0.000 claims 1
- 239000010980 sapphire Substances 0.000 claims 1
Classifications
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B3/00—Recording by mechanical cutting, deforming or pressing, e.g. of grooves or pits; Reproducing by mechanical sensing; Record carriers therefor
- G11B3/44—Styli, e.g. sapphire, diamond
- G11B3/46—Constructions or forms ; Dispositions or mountings, e.g. attachment of point to shank
- G11B3/48—Needles
Landscapes
- Pens And Brushes (AREA)
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DE217132C true DE217132C (https=) |
Family
ID=478460
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DENDAT217132D Active DE217132C (https=) |
Country Status (1)
| Country | Link |
|---|---|
| DE (1) | DE217132C (https=) |
-
0
- DE DENDAT217132D patent/DE217132C/de active Active
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