US2520030A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Radiant oven
Assignee: Individual
•
Filing: 1947-09-19
•
Granted: 1950-08-22
•
Expires: 1967-09-19
Abstract
No abstract record available.
Inventors
- 👤 Benjamin A Cliff
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 11:07
CPC Classifications
F; F24; F24B; F24B1/00; F24B1/20; F24B1/202; F24B1/205
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US44175A
Cited
US264627A
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US2153265A
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US1216008A
Cited
US1448148A
Cited
US1490274A
Cited
US1582532A
Cited
US2173166A
Cited
US2300405A
Cited
US2251600A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-08-21 | 1954-02-20 | 1954-08-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-08-21 | 1958-02-20 | 1958-08-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-08-21 | 1962-02-20 | 1962-08-22 | $7700.00 | Window Closed / Lapsed |