US2797745A
Expired / Lapsed
US
⏱️ 0.0 years remaining
rowell
Assignee: —
•
Filing: —
•
Granted: 1957-07-02
•
Expires: 1974-07-02
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 13:32
CPC Classifications
F; F23; F23D; F23D14/00; F23D14/46; F23D14/72; F23D14/725; F23N; F23N5/00; F23N5/02; F23N5/12; F23N5/123; F23N5/24; F23N5/242; F23Q; F23Q9/00; F23D2208/00; F23D2208/10; F23N2227/00; F23N2227/28; F23N2227/36; F23N2229/00
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US1688126A
Cited
US2136256A
Cited
US2238892A
Cited
US2304200A
Cited
US2285326A
Cited
US2402763A
Cited
US2313943A
Cited
US2427178A
Cited
US2577772A
Cited
US2627308A
Cited
US2594059A
Cited
US2537293A
Cited
US2616490A
Cited
US2665749A
Cited
US2608245A
Cited
US2727568A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-07-01 | 1960-12-31 | 1961-07-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-07-01 | 1964-12-31 | 1965-07-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-07-01 | 1968-12-31 | 1969-07-02 | $7700.00 | Window Closed / Lapsed |