US2647421A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Upsetting forging machine
Assignee: Ajax Manufacturing Co
•
Filing: 1947-11-08
•
Granted: 1953-08-04
•
Expires: 1967-11-08
Abstract
No abstract record available.
Inventors
- 👤 William W Criley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 22:07
CPC Classifications
B; B21; B21J; B21J9/00; B21J9/10; B21J9/20; B21J9/02; B21J9/06
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US757409A
Cited
GB191008753A
Cited
US2032836A
Cited
US2106830A
Cited
US2141951A
Cited
US2165614A
Cited
US2301028A
Cited
US2343403A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-08-03 | 1957-02-02 | 1957-08-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-08-03 | 1961-02-02 | 1961-08-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-08-03 | 1965-02-02 | 1965-08-04 | $7700.00 | Window Closed / Lapsed |