US2664901A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Quenching device
Assignee: General Electric Co
•
Filing: 1947-05-09
•
Granted: 1954-01-05
•
Expires: 1967-05-09
Abstract
No abstract record available.
Inventors
- 👤 Richard A Gehr
- 👤 Edmon S Freshwater
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 18:08
CPC Classifications
C; C21; C21D; C21D1/00; C21D1/62; C21D1/63; C21D1/64
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USRE20673E
Cited
US1521390A
Cited
US1580723A
Cited
GB441444A
Cited
US2191255A
Cited
US2301601A
Cited
US2141382A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-01-04 | 1957-07-06 | 1958-01-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-01-04 | 1961-07-06 | 1962-01-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-01-04 | 1965-07-06 | 1966-01-05 | $7700.00 | Window Closed / Lapsed |