US2679307A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Protective system for punch presses or other machines
Assignee: C TODD
•
Filing: 1951-08-22
•
Granted: 1954-05-25
•
Expires: 1971-08-22
Abstract
No abstract record available.
Inventors
- 👤 Koch Frederick
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 11:16
CPC Classifications
B; B21; B21D; B21D55/00; Y; Y10; Y10T; Y10T83/00; Y10T83/081; Y10T83/091; Y10T83/093
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US772113A
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US1375924A
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US1874804A
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US2062298A
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US2017865A
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US2143716A
Cited
DE705795C
Cited
US2533606A
Cited
US2518042A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-05-24 | 1957-11-23 | 1958-05-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-05-24 | 1961-11-23 | 1962-05-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-05-24 | 1965-11-23 | 1966-05-25 | $7700.00 | Window Closed / Lapsed |