Patent US2514788A successfully refreshed from Google Patents.
US2514788A
Expired / Lapsed
US
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Zero-reset device for numerical counters
Assignee: PRODUCTION INSTR Co
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Filing: 1945-12-29
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Granted: 1950-07-11
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Expires: 1965-12-29
Abstract
No abstract record available.
Inventors
- 👤 Martin L Nelson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 20:58
CPC Classifications
G; G06; G06M; G06M1/00; G06M1/28; G06M1/34; G06M1/343; G06M1/36; G06M1/363
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-07-10 | 1954-01-09 | 1954-07-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-07-10 | 1958-01-09 | 1958-07-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-07-10 | 1962-01-09 | 1962-07-11 | $7700.00 | Window Closed / Lapsed |