US2964239A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Duplicating punch apparatus
Assignee: MRS CLARE H WHITSON
•
Filing: 1954-04-12
•
Granted: 1960-12-13
•
Expires: 1974-04-12
Abstract
No abstract record available.
Inventors
- 👤 John W Whitson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 23:49
CPC Classifications
B; B21; B21D; B21D53/00; B21D53/82; B21D28/00; B21D28/02; B21D28/24; B21D28/26; B21D28/265; B21D51/00; B21D51/16; B21D51/38; B21D51/383
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US1871060A
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US1991729A
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US2110854A
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US2134815A
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US2144412A
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US2519031A
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US2620726A
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US2664815A
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US2768691A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-12-13 | 1964-06-13 | 1964-12-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-12-13 | 1968-06-13 | 1968-12-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-12-13 | 1972-06-13 | 1972-12-13 | $7700.00 | Window Closed / Lapsed |