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US2507798A
Expired / Lapsed
US
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Electric-impulse counter
Assignee: STANDARD ELECTRIC TIME CO
•
Filing: 1945-05-15
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Granted: 1950-05-16
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Expires: 1965-05-15
Abstract
No abstract record available.
Inventors
- 👤 Weyman E Maxwell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 13:17
CPC Classifications
F; F41; F41A; F41A19/00; F41A19/01
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US711635A
Cited
GB190228539A
Cited
US1468490A
Cited
US1812187A
Cited
US1925882A
Cited
US2249029A
Cited
US2122307A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-05-15 | 1953-11-14 | 1954-05-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-05-15 | 1957-11-14 | 1958-05-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-05-15 | 1961-11-14 | 1962-05-16 | $7700.00 | Window Closed / Lapsed |