US3407439A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Thrust bearing for rotating screw
Assignee: Leesona Corp
•
Filing: 1966-09-29
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Granted: 1968-10-29
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Expires: 1986-09-29
Abstract
No abstract record available.
Inventors
- 👤 Robert B Gregory
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 19:56
CPC Classifications
F; F16; F16C; F16C21/00; B; B29; B29C; B29C48/00; B29C48/25; B29C48/252; B30; B30B; B30B11/00; B30B11/22; B30B11/24; B30B11/241; F16C17/00; F16C17/04; F16C17/08; F16C32/00; F16C32/06; B29C48/03; F16C2322/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
DE23027C
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US2535865A
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US2848739A
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US2944288A
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US3154808A
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US3163693A
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US3304578A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-10-29 | 1972-04-29 | 1972-10-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-10-29 | 1976-04-29 | 1976-10-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-10-29 | 1980-04-29 | 1980-10-29 | $7700.00 | Window Closed / Lapsed |