US2568152A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Die for use with a punch
Assignee: AT&T Inc
•
Filing: 1949-03-18
•
Granted: 1951-09-18
•
Expires: 1969-03-18
Abstract
No abstract record available.
Inventors
- 👤 Norman T Hermann
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 13:36
CPC Classifications
B; B21; B21D; B21D28/00; B21D28/02; B21D28/14; Y; Y10; Y10T; Y10T83/00; Y10T83/929; Y10T83/9411; Y10T83/9423; Y10T83/9437
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1095116A
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US1095117A
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US1070887A
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US1118180A
Cited
US1118181A
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US2124591A
Cited
US2124676A
Cited
US2222860A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-09-17 | 1955-03-19 | 1955-09-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-09-17 | 1959-03-19 | 1959-09-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-09-17 | 1963-03-19 | 1963-09-18 | $7700.00 | Window Closed / Lapsed |