Patent US2935657A successfully refreshed from Google Patents.
US2935657A
Expired / Lapsed
US
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Anticipator compensator thermostat
Assignee: North American Aviation Corp
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Filing: 1956-05-04
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Granted: 1960-05-03
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Expires: 1976-05-04
Abstract
No abstract record available.
Inventors
- 👤 Jr Frank W Thunberg
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 12:36
CPC Classifications
G; G05; G05D; G05D23/00; G05D23/19; G05D23/30; G05D23/275; G05D23/27535; G05D23/27539
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2171803A
Cited
US2280667A
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US2302603A
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US2295340A
Cited
US2346592A
Cited
US2421953A
Cited
US2626311A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-05-03 | 1963-11-02 | 1964-05-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-05-03 | 1967-11-02 | 1968-05-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-05-03 | 1971-11-02 | 1972-05-03 | $7700.00 | Window Closed / Lapsed |