US3273438A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Punch head with punch-cut replaceable dies
Assignee: Individual
•
Filing: 1964-09-22
•
Granted: 1966-09-20
•
Expires: 1984-09-22
Abstract
No abstract record available.
Inventors
- 👤 Arthur F Brook
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 14:38
CPC Classifications
B; B26; B26F; B26F1/00; B26F1/02; B26F1/14; Y; Y10; Y10T; Y10T83/00; Y10T83/929; Y10T83/9411; Y10T83/9423; Y10T83/9425; Y10T83/9428; Y10T83/943; Y10T83/9437
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US345189A
Cited
US1070887A
Cited
US2568863A
Cited
US2561678A
Cited
US2568152A
Cited
US2745492A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-09-19 | 1970-03-21 | 1970-09-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-09-19 | 1974-03-21 | 1974-09-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-09-19 | 1978-03-21 | 1978-09-20 | $7700.00 | Window Closed / Lapsed |