FR870030A - Key for calculating machines - Google Patents
Key for calculating machinesInfo
- Publication number
- FR870030A FR870030A FR870030DA FR870030A FR 870030 A FR870030 A FR 870030A FR 870030D A FR870030D A FR 870030DA FR 870030 A FR870030 A FR 870030A
- Authority
- FR
- France
- Prior art keywords
- key
- calculating machines
- machines
- calculating
- 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
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41B—MACHINES OR ACCESSORIES FOR MAKING, SETTING, OR DISTRIBUTING TYPE; TYPE; PHOTOGRAPHIC OR PHOTOELECTRIC COMPOSING DEVICES
- B41B27/00—Control, indicating, or safety devices or systems for composing machines of various kinds or types
- B41B27/02—Systems for controlling all operations
- B41B27/04—Keyboards
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
- B41J5/00—Devices or arrangements for controlling character selection
- B41J5/08—Character or syllable selected by means of keys or keyboards of the typewriter type
- B41J5/12—Construction of key buttons
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE870030X | 1939-10-21 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| FR870030A true FR870030A (en) | 1942-02-27 |
Family
ID=6803421
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| FR870030D Expired FR870030A (en) | 1939-10-21 | 1941-02-15 | Key for calculating machines |
Country Status (1)
| Country | Link |
|---|---|
| FR (1) | FR870030A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4100402A (en) * | 1976-11-22 | 1978-07-11 | Hugin Kassaregister Ab | Keyboard key with changeable indicia |
-
1941
- 1941-02-15 FR FR870030D patent/FR870030A/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4100402A (en) * | 1976-11-22 | 1978-07-11 | Hugin Kassaregister Ab | Keyboard key with changeable indicia |
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