US2786930A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Thermostatic control for surface heaters
Assignee: Robertshaw Controls Co
•
Filing: 1954-09-08
•
Granted: 1957-03-26
•
Expires: 1974-09-08
Abstract
No abstract record available.
Inventors
- 👤 Weber Victor
- 👤 Hugh J Tyler
- 👤 William J Russell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 07:43
CPC Classifications
H; H05; H05B; H05B1/00; H05B1/02; H05B1/0202; H05B1/0208
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2032563A
Cited
US2303012A
Cited
US2399423A
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US2471240A
Cited
US2534097A
Cited
US2699487A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-03-25 | 1960-09-24 | 1961-03-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-03-25 | 1964-09-24 | 1965-03-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-03-25 | 1968-09-24 | 1969-03-26 | $7700.00 | Window Closed / Lapsed |