US3294597A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for quenching a metal member
Assignee: AO Smith Corp
•
Filing: 1965-08-04
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Granted: 1966-12-27
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Expires: 1985-08-04
Abstract
No abstract record available.
Inventors
- 👤 Gerald J Kuchera
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 04:34
CPC Classifications
C; C21; C21D; C21D1/00; C21D1/62; C21D1/673
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US3201287A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-12-26 | 1970-06-27 | 1970-12-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-12-26 | 1974-06-27 | 1974-12-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-12-26 | 1978-06-27 | 1978-12-27 | $7700.00 | Window Closed / Lapsed |