Patent US1973752A successfully refreshed from Google Patents.
US1973752A
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US
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Temperature regulating system
Assignee: Bristol Co
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Filing: 1932-01-28
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Granted: 1934-09-18
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Expires: 1952-01-28
Abstract
No abstract record available.
Inventors
- 👤 Fred A Faust
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 03:17
CPC Classifications
G; G05; G05D; G05D23/00; G05D23/19; G05D23/20; G05D23/22; G05D23/1906; G05D23/1909
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) | 1937-09-17 | 1938-03-19 | 1938-09-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1941-09-17 | 1942-03-19 | 1942-09-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1945-09-17 | 1946-03-19 | 1946-09-18 | $7700.00 | Window Closed / Lapsed |