US2511981A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electronic thermostat
Assignee: RCA Corp
•
Filing: 1947-09-26
•
Granted: 1950-06-20
•
Expires: 1967-09-26
Abstract
No abstract record available.
Inventors
- 👤 Jr George D Hanchett
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 20:20
CPC Classifications
G; G05; G05D; G05D23/00; G05D23/19; G05D23/20; G05D23/24; G05D23/2451; G05D23/2456
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US1654988A
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US1654937A
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US1904485A
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US1973123A
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US2026800A
Cited
US2030100A
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US2126398A
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US2150265A
Cited
US2248821A
Cited
US2266569A
Cited
US2443658A
Cited
US2435961A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-06-19 | 1953-12-19 | 1954-06-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-06-19 | 1957-12-19 | 1958-06-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-06-19 | 1961-12-19 | 1962-06-20 | $7700.00 | Window Closed / Lapsed |