Patent US2929252A successfully refreshed from Google Patents.
US2929252A
Expired / Lapsed
US
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Pivot and sealing means
Assignee: RTX Corp
•
Filing: 1957-10-31
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Granted: 1960-03-22
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Expires: 1977-10-31
Abstract
No abstract record available.
Inventors
- 👤 James D Evers
- 👤 Charles F Stearns
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 22:17
CPC Classifications
B; B64; B64D; B64D27/00; B64D27/02; B64D27/16; Y; Y10; Y10T; Y10T137/00; Y10T137/0971; Y10T137/1044
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1702056A
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US1878440A
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US2385510A
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US2640361A
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US2652200A
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US2690360A
Cited
US2717792A
Cited
US2759075A
Cited
US2795959A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-03-22 | 1963-09-21 | 1964-03-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-03-22 | 1967-09-21 | 1968-03-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-03-22 | 1971-09-21 | 1972-03-22 | $7700.00 | Window Closed / Lapsed |