Patent US2435675A successfully refreshed from Google Patents.
US2435675A
Expired / Lapsed
US
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Thermostat valve and spring therefor
Assignee: Bishop and Babcock Manufacturing Co
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Filing: 1946-06-08
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Granted: 1948-02-10
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Expires: 1966-06-08
Abstract
No abstract record available.
Inventors
- 👤 Walter A Curtis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 08:00
CPC Classifications
G; G05; G05D; G05D23/00; G05D23/01; G05D23/12; G05D23/123
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
SE44503C1
Cited
US805720A
Cited
US1934548A
Cited
US1982706A
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US2168999A
Cited
US2255543A
Cited
US2336858A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1951-02-09 | 1951-08-11 | 1952-02-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-02-09 | 1955-08-11 | 1956-02-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-02-09 | 1959-08-11 | 1960-02-10 | $7700.00 | Window Closed / Lapsed |