Patent US2522826A successfully refreshed from Google Patents.
US2522826A
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Electric temperature control system
Assignee: CLARENCE E LAPEDES
•
Filing: 1947-02-20
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Granted: 1950-09-19
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Expires: 1967-02-20
Abstract
No abstract record available.
Inventors
- 👤 Frederick J Hooven
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 19:31
CPC Classifications
H; H05; H05B; H05B3/00; H05B3/20; H05B3/34; H05B3/342; G; G05; G05D; G05D23/00; G05D23/19; G05D23/20; G05D23/24; G05D23/2451; G05D23/2453; H05B2203/00; H05B2203/017
Claims Analysis
Total Claims: 0
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-09-18 | 1954-03-20 | 1954-09-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-09-18 | 1958-03-20 | 1958-09-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-09-18 | 1962-03-20 | 1962-09-19 | $7700.00 | Window Closed / Lapsed |