US2657698A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Quenching apparatus
Assignee: Selas Corp of America
•
Filing: 1947-08-27
•
Granted: 1953-11-03
•
Expires: 1967-08-27
Abstract
No abstract record available.
Inventors
- 👤 James W Garrett
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 09:34
CPC Classifications
C; C21; C21D; C21D1/00; C21D1/62; C21D1/667; B; B21; B21B; B21B45/00; B21B45/02; B21B45/0203; B21B45/0209; B21B45/0215; B21B45/0224
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US538727A
Cited
US1211277A
Cited
US1381646A
Cited
US1643330A
Cited
US1688705A
Cited
US1672061A
Cited
US2194565A
Cited
US2287825A
Cited
US2376515A
Cited
US2340325A
Cited
US2542237A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-11-02 | 1957-05-04 | 1957-11-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-11-02 | 1961-05-04 | 1961-11-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-11-02 | 1965-05-04 | 1965-11-03 | $7700.00 | Window Closed / Lapsed |