US3149509A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Swaging machine
Assignee: FENN Manufacturing Co
•
Filing: 1961-04-26
•
Granted: 1964-09-22
•
Expires: 1981-04-26
Abstract
No abstract record available.
Inventors
- 👤 Albert H Oquist
- 👤 Schirmer Frank
- 👤 George K Bernhardt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 16:16
CPC Classifications
B; B21; B21J; B21J7/00; B21J7/02; B21J7/14; B21J7/145
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1969317A
Cited
US2353008A
Cited
US2577303A
Cited
US2669137A
Cited
FR1232267A
Cited
US3002406A
Cited
US3064508A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-09-22 | 1968-03-23 | 1968-09-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-09-22 | 1972-03-23 | 1972-09-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-09-22 | 1976-03-23 | 1976-09-22 | $7700.00 | Window Closed / Lapsed |