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US2932150A
Expired / Lapsed
US
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Twister spindle
Assignee: Leesona Corp
•
Filing: 1956-10-19
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Granted: 1960-04-12
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Expires: 1976-10-19
Abstract
No abstract record available.
Inventors
- 👤 John V Keith
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 09:44
CPC Classifications
D; D01; D01H; D01H1/00; D01H1/10; D01H1/105; D01H1/106
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2732610A
Cited
CH250053A
Cited
US2445721A
Cited
US2478927A
Cited
US2684566A
Cited
US2725711A
Cited
US2729932A
Cited
US2731786A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-04-12 | 1963-10-12 | 1964-04-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-04-12 | 1967-10-12 | 1968-04-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-04-12 | 1971-10-12 | 1972-04-12 | $7700.00 | Window Closed / Lapsed |