US2570919A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Notching and embossing punch and die
Assignee: AT&T Inc
•
Filing: 1947-11-28
•
Granted: 1951-10-09
•
Expires: 1967-11-28
Abstract
No abstract record available.
Inventors
- 👤 Harry W Clifford
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 03:49
CPC Classifications
B; B21; B21D; B21D28/00; B21D28/24; B21D28/28; Y; Y10; Y10T; Y10T83/00; Y10T83/384; Y10T83/395; Y10T83/40; Y10T83/401; Y10T83/402; Y10T83/869; Y10T83/8727
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
DE222095C
Cited
GB190625467A
Cited
US925070A
Cited
US1007103A
Cited
US2315340A
Cited
US2340162A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-10-08 | 1955-04-09 | 1955-10-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-10-08 | 1959-04-09 | 1959-10-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-10-08 | 1963-04-09 | 1963-10-09 | $7700.00 | Window Closed / Lapsed |