US2731786A
Expired / Lapsed
US
⏱️ 0.0 years remaining
klein
Assignee: —
•
Filing: —
•
Granted: 1956-01-24
•
Expires: 1973-01-24
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 03:49
CPC Classifications
D; D01; D01H; D01H13/00; D01H13/10; D01H13/104; D01H13/106; D01H7/00; D01H7/02; D01H7/86; D01H7/862
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US2240153A
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FR872986A
Cited
US2410674A
Cited
US2379806A
Cited
US2411126A
Cited
US2473521A
Cited
US2445721A
Cited
US2559735A
Cited
US2478926A
Cited
US2518491A
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US2552150A
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US2563641A
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US2660856A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-01-23 | 1959-07-25 | 1960-01-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-01-23 | 1963-07-25 | 1964-01-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-01-23 | 1967-07-25 | 1968-01-24 | $7700.00 | Window Closed / Lapsed |