US2993976A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Heater control
Assignee: Westinghouse Electric Corp
•
Filing: 1958-11-12
•
Granted: 1961-07-25
•
Expires: 1978-11-12
Abstract
No abstract record available.
Inventors
- 👤 Robert L Moore
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 09:26
CPC Classifications
H; H05; H05B; H05B1/00; H05B1/02; H05B1/0202; H05B1/0213; H01; H01H; H01H37/00; H01H37/02; H01H37/32; H01H37/52
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1684281A
Cited
GB427512A
Cited
US2526924A
Cited
US2623137A
Cited
US2687468A
Cited
US2728842A
Cited
US2678379A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-07-24 | 1965-01-23 | 1965-07-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-07-24 | 1969-01-23 | 1969-07-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-07-24 | 1973-01-23 | 1973-07-25 | $7700.00 | Window Closed / Lapsed |