US2816607A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Strip guides for punch presses
Assignee: AT&T Inc
•
Filing: 1954-10-06
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Granted: 1957-12-17
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Expires: 1974-10-06
Abstract
No abstract record available.
Inventors
- 👤 Edwin J Tarsa
- 👤 Harold J Volman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 15:01
CPC Classifications
B; B21; B21D; B21D28/00; B21D28/02; B21D28/04; Y; Y10; Y10T; Y10T83/00; Y10T83/202; Y10T83/2092; Y10T83/2209; Y10T83/2216; Y10T83/647; Y10T83/6476; Y10T83/6484; Y10T83/869; Y10T83/8821
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1979413A
Cited
US2374376A
Cited
US2372499A
Cited
US2447884A
Cited
US2613743A
Cited
US2619172A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-12-16 | 1961-06-17 | 1961-12-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-12-16 | 1965-06-17 | 1965-12-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-12-16 | 1969-06-17 | 1969-12-17 | $7700.00 | Window Closed / Lapsed |