Patent US2968983A successfully refreshed from Google Patents.
US2968983A
Expired / Lapsed
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Rotary impact perforating machine having positive punch retracting means
Assignee: Individual
•
Filing: 1956-05-01
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Granted: 1961-01-24
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Expires: 1976-05-01
Abstract
No abstract record available.
Inventors
- 👤 Walter F Cousino
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 18:56
CPC Classifications
B; B21; B21D; B21D28/00; B21D28/24; B21D28/26; Y; Y10; Y10T; Y10T83/00; Y10T83/485; Y10T83/494; Y10T83/50; Y10T83/869; Y10T83/8788; Y10T83/8821; Y10T83/8841; Y10T83/8843; Y10T83/885
Claims Analysis
Total Claims: 0
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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) | 1964-01-24 | 1964-07-25 | 1965-01-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-01-24 | 1968-07-25 | 1969-01-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-01-24 | 1972-07-25 | 1973-01-24 | $7700.00 | Window Closed / Lapsed |