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US2736379A
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Force multiplying punching devices utilizing relative movement
Assignee: WYNNWOOD CORP
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Filing: 1952-07-21
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Granted: 1956-02-28
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Expires: 1972-07-21
Abstract
No abstract record available.
Inventors
- 👤 Winn John
- 👤 Edward S Peterson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 05:40
CPC Classifications
G; G06; G06K; G06K1/00; G06K1/02; G06K1/06; B; B26; B26F; B26F1/00; B26F1/02; B26F1/38; B26F1/40; Y; Y10; Y10T; Y10T74/00; Y10T74/18; Y10T74/18992; Y10T83/00; Y10T83/869; Y10T83/8752; Y10T83/8758; Y10T83/8821; Y10T83/8835
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-02-27 | 1959-08-29 | 1960-02-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-02-27 | 1963-08-29 | 1964-02-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-02-27 | 1967-08-29 | 1968-02-28 | $7700.00 | Window Closed / Lapsed |