US2697332A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Automatic defroster control
Assignee: Seeger Refrigerator Co
•
Filing: 1951-06-12
•
Granted: 1954-12-21
•
Expires: 1971-06-12
Abstract
No abstract record available.
Inventors
- 👤 Thomas W Duncan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 20:16
CPC Classifications
F; F25; F25D; F25D21/00; F25D21/002; F25D21/008; F25B; F25B2700/00; F25B2700/21; F25B2700/2117; F25D2700/00; F25D2700/02
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1250729A
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US1287545A
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DE359733C
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US1911475A
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US2114766A
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US2373186A
Cited
US2561348A
Cited
US2553846A
Cited
US2583661A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-12-20 | 1958-06-21 | 1958-12-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-12-20 | 1962-06-21 | 1962-12-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-12-20 | 1966-06-21 | 1966-12-21 | $7700.00 | Window Closed / Lapsed |