US2684073A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Quenching machine
Assignee: Individual
•
Filing: 1948-04-23
•
Granted: 1954-07-20
•
Expires: 1968-04-23
Abstract
No abstract record available.
Inventors
- 👤 Hendrick J Gregg
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 04:45
CPC Classifications
C; C21; C21D; C21D1/00; C21D1/62; C21D1/63
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US2259278A
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US2348232A
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US2493291A
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US2374535A
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US2414971A
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US2411174A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-07-19 | 1958-01-18 | 1958-07-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-07-19 | 1962-01-18 | 1962-07-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-07-19 | 1966-01-18 | 1966-07-20 | $7700.00 | Window Closed / Lapsed |