Patent US3189153A successfully refreshed from Google Patents.
US3189153A
Expired / Lapsed
US
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Keyboard
Assignee: International Business Machines Corp
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Filing: 1962-07-03
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Granted: 1965-06-15
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Expires: 1982-07-03
Abstract
No abstract record available.
Inventors
- 👤 Cecil P Barnard
- 👤 Donald H Heiser
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 16:43
CPC Classifications
H; H01; H01H; H01H13/00; H01H13/70; H01H13/76
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
112 words
A KEYBBOARD COMPRISING A PLURALITY OF DATA KEYS, A PLURALITY OF CODE BARS OPERABLE IN RESPONSE TO THE MOVEMENT OF THE CORRESPONDING DATA KEYS, A PLURALITY OF BISTABLE CODE BAILS ADAPTED TO BE MOVED BY SAID CODE BARS TO ONE OF THE OTHER OF THE STABLE POSITIONS IN PREDETERMINED COMBINATION REPRESENTATIVE OF THE SELECTED DATA KEY, SWITCH MEANS RESPONSIVE TO THE MOVEMENT OF SAID CODE BAILS FOR GENERATING DATA SIGNALS, AND DELAYING MEANS RESPONSIVE TO THE MOVEMENT OF SAID CODE BARS IN A SWITCH CLOSING DIRECTION FOR HOLDING THE SWITCH MEANS AGAINST RELEASE FOR A PREDETERMINED TIME SO THAT SAID DATA SIGNALS ARE AVAILABLE TO A UTILIZATION DEVICE FOR SAID PREDETERMINED TIME.
Claim 2
Dependent Claim
112 words
A KEYBBOARD COMPRISING A PLURALITY OF DATA KEYS, A PLURALITY OF CODE BARS OPERABLE IN RESPONSE TO THE MOVEMENT OF THE CORRESPONDING DATA KEYS, A PLURALITY OF BISTABLE CODE BAILS ADAPTED TO BE MOVED BY SAID CODE BARS TO ONE OF THE OTHER OF THE STABLE POSITIONS IN PREDETERMINED COMBINATION REPRESENTATIVE OF THE SELECTED DATA KEY, SWITCH MEANS RESPONSIVE TO THE MOVEMENT OF SAID CODE BAILS FOR GENERATING DATA SIGNALS, AND DELAYING MEANS RESPONSIVE TO THE MOVEMENT OF SAID CODE BARS IN A SWITCH CLOSING DIRECTION FOR HOLDING THE SWITCH MEANS AGAINST RELEASE FOR A PREDETERMINED TIME SO THAT SAID DATA SIGNALS ARE AVAILABLE TO A UTILIZATION DEVICE FOR SAID PREDETERMINED TIME.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-06-14 | 1968-12-14 | 1969-06-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-06-14 | 1972-12-14 | 1973-06-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-06-14 | 1976-12-14 | 1977-06-15 | $7700.00 | Window Closed / Lapsed |