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US2640896A
Expired / Lapsed
US
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Thermostat device
Assignee: John B. Pierce Laboratory
•
Filing: 1950-03-16
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Granted: 1953-06-02
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Expires: 1970-03-16
Abstract
No abstract record available.
Inventors
- 👤 John B Cataldo
- 👤 Albert N Cook
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 17:29
CPC Classifications
H; H01; H01H; H01H37/00; H01H37/02; H01H37/32; H01H37/46; H01H37/48
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
GB340781A
Cited
US1940300A
Cited
US1874660A
Cited
US1939285A
Cited
US1865219A
Cited
US2221907A
Cited
US2235186A
Cited
US2394121A
Cited
US2549740A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-06-01 | 1956-12-01 | 1957-06-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-06-01 | 1960-12-01 | 1961-06-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-06-01 | 1964-12-01 | 1965-06-02 | $7700.00 | Window Closed / Lapsed |