Patent US2181606A successfully refreshed from Google Patents.
US2181606A
Expired / Lapsed
US
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Thermostatic control mechanism
Assignee: Vapor Car Heating Co Inc
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Filing: 1937-09-20
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Granted: 1939-11-28
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Expires: 1957-09-20
Abstract
No abstract record available.
Inventors
- 👤 Paul B Parks
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 19:15
CPC Classifications
H; H01; H01H; H01H37/00; H01H37/02; H01H37/64; H01H37/66
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1942-11-27 | 1943-05-29 | 1943-11-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1946-11-27 | 1947-05-29 | 1947-11-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1950-11-27 | 1951-05-29 | 1951-11-28 | $7700.00 | Window Closed / Lapsed |