US2529478A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Casing door operator
Assignee: Primerica Inc
•
Filing: 1946-01-07
•
Granted: 1950-11-14
•
Expires: 1966-01-07
Abstract
No abstract record available.
Inventors
- 👤 Neils P Bach
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 20:55
CPC Classifications
E; E05; E05F; E05F11/00; E05F11/02; E05F11/08; E05F11/12; Y; Y10; Y10T; Y10T292/00; Y10T292/08; Y10T292/0911; Y10T292/0945; Y10T292/0947; Y10T292/1043; Y10T292/1044; Y10T292/1045; Y10T292/1049
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US517353A
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US610720A
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US670506A
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US736772A
Cited
US1070128A
Cited
US1367954A
Cited
US1629438A
Cited
US1967346A
Cited
US2032221A
Cited
US2372369A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-11-13 | 1954-05-15 | 1954-11-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-11-13 | 1958-05-15 | 1958-11-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-11-13 | 1962-05-15 | 1962-11-14 | $7700.00 | Window Closed / Lapsed |