US3413624A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Automatic magnetic recording and playback control system for a keyboard actuated business machine
Assignee: Individual
•
Filing: 1964-02-10
•
Granted: 1968-11-26
•
Expires: 1984-02-10
Abstract
No abstract record available.
Inventors
- 👤 Colin D Murdoch
- 👤 Chad W Pennebaker
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 15:21
CPC Classifications
B; B41; B41J; B41J5/00; B41J5/30; B41J5/44; B41J5/48; B41J5/51; B41J3/00; B41J3/44; B41J3/50; G; G06; G06F; G06F3/00; G06F3/002; G06F3/09
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US3124645A
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US2767243A
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US2700067A
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US2838603A
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US3119988A
Cited
US3025941A
Cited
US3115620A
Cited
US3153240A
Cited
US3119996A
Cited
US3277454A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-11-26 | 1972-05-27 | 1972-11-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-11-26 | 1976-05-27 | 1976-11-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-11-26 | 1980-05-27 | 1980-11-26 | $7700.00 | Window Closed / Lapsed |