DE147918C - - Google Patents
Info
- Publication number
- DE147918C DE147918C DENDAT147918D DE147918DA DE147918C DE 147918 C DE147918 C DE 147918C DE NDAT147918 D DENDAT147918 D DE NDAT147918D DE 147918D A DE147918D A DE 147918DA DE 147918 C DE147918 C DE 147918C
- Authority
- DE
- Germany
- Prior art keywords
- characters
- bands
- keys
- key
- writing
- 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
- 230000000994 depressogenic effect Effects 0.000 description 1
- 239000012780 transparent material Substances 0.000 description 1
- 238000004804 winding Methods 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
- G09C3/10—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 involving removable or interchangeable coding members, e.g. master tapes, punched cards
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Theoretical Computer Science (AREA)
- Input From Keyboards Or The Like (AREA)
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DE147918C true DE147918C (OSRAM) |
Family
ID=415055
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DENDAT147918D Active DE147918C (OSRAM) |
Country Status (1)
| Country | Link |
|---|---|
| DE (1) | DE147918C (OSRAM) |
-
0
- DE DENDAT147918D patent/DE147918C/de active Active
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