Patent US1785158A successfully refreshed from Google Patents.
Patent US2635689A successfully refreshed from Google Patents.
US2635689A
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Electrical timing system and apparatus
Assignee: Fansteel Inc
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Filing: 1950-08-30
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Granted: 1953-04-21
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Expires: 1970-08-30
Abstract
No abstract record available.
Inventors
- 👤 James H Hall
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 05:26
CPC Classifications
G; G04; G04C; G04C3/00; G04C3/04; G04C3/06; H; H02; H02J; H02J7/00; H02J7/02; H02J7/04; H02J7/90; H02J7/92
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1430107A
Cited
US1786280A
Cited
US1851592A
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US2227118A
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US2224593A
Cited
US2346694A
Cited
US2295993A
Cited
GB580546A
Cited
US2456978A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-04-20 | 1956-10-20 | 1957-04-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-04-20 | 1960-10-20 | 1961-04-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-04-20 | 1964-10-20 | 1965-04-21 | $7700.00 | Window Closed / Lapsed |