US2857968A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Perforating machine
Assignee: Individual
•
Filing: 1957-05-01
•
Granted: 1958-10-28
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Expires: 1977-05-01
Abstract
No abstract record available.
Inventors
- 👤 Walter F Cousino
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 20:33
CPC Classifications
B; B21; B21D; B21D28/00; B21D28/24; B21D28/246; B21D28/26; Y; Y10; Y10T; Y10T83/00; Y10T83/101; Y10T83/444; Y10T83/4564; Y10T83/4567; Y10T83/4572; Y10T83/4574; Y10T83/869; Y10T83/8759; Y10T83/8761; Y10T83/8821; Y10T83/8828; Y10T83/8841; Y10T83/8843
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-10-27 | 1962-04-28 | 1962-10-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-10-27 | 1966-04-28 | 1966-10-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-10-27 | 1970-04-28 | 1970-10-28 | $7700.00 | Window Closed / Lapsed |