Patent US2657698A successfully refreshed from Google Patents.
US2657698A
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Quenching apparatus
Assignee: Selas Corp of America
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Filing: 1947-08-27
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Granted: 1953-11-03
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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 18:01
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
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References Cited (Backward Citations)
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US1211277A
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US1381646A
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US1643330A
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US1688705A
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US1672061A
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US2194565A
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US2287825A
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US2376515A
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US2340325A
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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 |