Patent US2662537A successfully refreshed from Google Patents.
US2662537A
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US
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Die quenching apparatus
Assignee: TUBULAR RIVET AND STUD Co
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Filing: 1947-04-09
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Granted: 1953-12-15
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Expires: 1967-04-09
Abstract
No abstract record available.
Inventors
- 👤 Thomas J Doyle
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 03:55
CPC Classifications
C; C21; C21D; C21D1/00; C21D1/62; C21D1/673
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US515556A
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US625045A
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US1948480A
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US2141081A
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US2176845A
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US2411698A
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US2379789A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-12-14 | 1957-06-15 | 1957-12-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-12-14 | 1961-06-15 | 1961-12-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-12-14 | 1965-06-15 | 1965-12-15 | $7700.00 | Window Closed / Lapsed |