Patent US2940440A successfully refreshed from Google Patents.
US2940440A
Expired / Lapsed
US
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Oven
Assignee: Chambers Corp
•
Filing: 1950-11-03
•
Granted: 1960-06-14
•
Expires: 1970-11-03
Abstract
No abstract record available.
Inventors
- 👤 John E Chambers
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 05:09
CPC Classifications
F; F24; F24C; F24C3/00; F24C3/12; F24C3/126; F24C3/128
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US2174274A
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US2156516A
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US2337301A
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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) | 1963-06-14 | 1963-12-14 | 1964-06-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-06-14 | 1967-12-14 | 1968-06-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-06-14 | 1971-12-14 | 1972-06-14 | $7700.00 | Window Closed / Lapsed |