DE568789C - Kapseln zum Aufsetzen auf die Tasten von Schreibmaschinen - Google Patents
Kapseln zum Aufsetzen auf die Tasten von SchreibmaschinenInfo
- Publication number
- DE568789C DE568789C DEW84978D DEW0084978D DE568789C DE 568789 C DE568789 C DE 568789C DE W84978 D DEW84978 D DE W84978D DE W0084978 D DEW0084978 D DE W0084978D DE 568789 C DE568789 C DE 568789C
- Authority
- DE
- Germany
- Prior art keywords
- capsules
- letters
- group
- type
- letter
- 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.)
- Expired
Links
- 239000002775 capsule Substances 0.000 title claims description 40
- 239000003086 colorant Substances 0.000 description 2
- 239000011521 glass Substances 0.000 description 2
- 239000010445 mica Substances 0.000 description 2
- 229910052618 mica group Inorganic materials 0.000 description 2
- 229920002160 Celluloid Polymers 0.000 description 1
- 239000011111 cardboard Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000000123 paper Substances 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 239000002023 wood Substances 0.000 description 1
Classifications
-
- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09C—CIPHERING OR DECIPHERING APPARATUS FOR CRYPTOGRAPHIC OR OTHER PURPOSES INVOLVING THE NEED FOR SECRECY
- G09C3/00—Typewriters for ciphering or deciphering cryptographic text
- G09C3/04—Typewriters for ciphering or deciphering cryptographic text wherein the operative connections between the keys and the type-bars are automatically and continuously permuted, during operation, by a coding or key member
- G09C3/06—Typewriters for ciphering or deciphering cryptographic text wherein the operative connections between the keys and the type-bars are automatically and continuously permuted, during operation, by a coding or key member the connections being mechanical
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Theoretical Computer Science (AREA)
- Input From Keyboards Or The Like (AREA)
- Impression-Transfer Materials And Handling Thereof (AREA)
- Handling Of Sheets (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB708928X | 1930-03-29 |
Publications (1)
Publication Number | Publication Date |
---|---|
DE568789C true DE568789C (de) | 1933-01-25 |
Family
ID=10494207
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DEW84978D Expired DE568789C (de) | 1930-03-29 | 1931-02-01 | Kapseln zum Aufsetzen auf die Tasten von Schreibmaschinen |
Country Status (4)
Country | Link |
---|---|
BE (1) | BE378566A (enrdf_load_stackoverflow) |
DE (1) | DE568789C (enrdf_load_stackoverflow) |
FR (2) | FR699759A (enrdf_load_stackoverflow) |
GB (1) | GB381267A (enrdf_load_stackoverflow) |
-
1930
- 1930-07-30 FR FR699759D patent/FR699759A/fr not_active Expired
-
1931
- 1931-01-07 FR FR708928D patent/FR708928A/fr not_active Expired
- 1931-02-01 DE DEW84978D patent/DE568789C/de not_active Expired
- 1931-03-27 BE BE378566D patent/BE378566A/xx unknown
- 1931-07-24 GB GB21249/31A patent/GB381267A/en not_active Expired
Also Published As
Publication number | Publication date |
---|---|
FR708928A (fr) | 1931-07-30 |
BE378566A (enrdf_load_stackoverflow) | 1931-04-30 |
FR699759A (fr) | 1931-02-19 |
GB381267A (en) | 1932-10-06 |
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