Patent US2964984A successfully refreshed from Google Patents.
US2964984A
Expired / Lapsed
US
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Apparatus for notching sheet material having reversible multiple cutting edge ledger blades
Assignee: GEORGE F WALES
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Filing: 1956-11-20
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Granted: 1960-12-20
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Expires: 1976-11-20
Abstract
No abstract record available.
Inventors
- 👤 Arthur K Schott
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 09:32
CPC Classifications
B; B21; B21D; B21D28/00; B21D28/02; B21D28/14; Y; Y10; Y10S; Y10S83/00; Y10S83/917; Y10T; Y10T83/00; Y10T83/929; Y10T83/9411; Y10T83/9447; Y10T83/9457; Y10T83/9473; Y10T83/9478
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US629532A
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US856719A
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US1203342A
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US1140897A
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US1519983A
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US1663092A
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US2146780A
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US2222095A
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US2255846A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-12-20 | 1964-06-20 | 1964-12-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-12-20 | 1968-06-20 | 1968-12-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-12-20 | 1972-06-20 | 1972-12-20 | $7700.00 | Window Closed / Lapsed |