US2633840A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Auxiliary oven
Assignee: Individual
•
Filing: 1948-12-10
•
Granted: 1953-04-07
•
Expires: 1968-12-10
Abstract
No abstract record available.
Inventors
- 👤 Charles P Crawford
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 22:15
CPC Classifications
F; F24; F24C; F24C15/00; F24C15/18
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US434242A
Cited
DE482815C
Cited
US903834A
Cited
GB191406468A
Cited
US1242941A
Cited
US1343129A
Cited
US1478134A
Cited
US2453939A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-04-06 | 1956-10-06 | 1957-04-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-04-06 | 1960-10-06 | 1961-04-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-04-06 | 1964-10-06 | 1965-04-07 | $7700.00 | Window Closed / Lapsed |