US2637283A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Unit heating system for baking ovens
Assignee: PETERSEN OVEN CO
•
Filing: 1949-03-18
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Granted: 1953-05-05
•
Expires: 1969-03-18
Abstract
No abstract record available.
Inventors
- 👤 Klein Chris
- 👤 Richard C Skarin
- 👤 William G Tinker
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 09:52
CPC Classifications
A; A21; A21B; A21B1/00; A21B1/42; A21B1/46; A21B1/40
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1719684A
Cited
US2041930A
Cited
US1852526A
Cited
US1857447A
Cited
GB393618A
Cited
US2138465A
Cited
US2556840A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-05-04 | 1956-11-03 | 1957-05-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-05-04 | 1960-11-03 | 1961-05-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-05-04 | 1964-11-03 | 1965-05-05 | $7700.00 | Window Closed / Lapsed |