US2782304A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrical impulse generators
Assignee: British Tabulating Machine Co Ltd
•
Filing: 1953-01-13
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Granted: 1957-02-19
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Expires: 1973-01-13
Abstract
No abstract record available.
Inventors
- 👤 Woods-Hill William
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 10:57
CPC Classifications
G; G01; G01P; G01P3/00; G01P3/42; G01P3/44; G01P3/48; G01P3/481; H; H02; H02M; H02M7/00; H02M7/42; H02M7/54
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1893019A
Cited
US2223513A
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US2309068A
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US2281495A
Cited
US2439255A
Cited
US2388233A
Cited
US2477585A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-02-19 | 1960-08-20 | 1961-02-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-02-19 | 1964-08-20 | 1965-02-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-02-19 | 1968-08-20 | 1969-02-19 | $7700.00 | Window Closed / Lapsed |