US2676740A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Transfer device for pressurized compartments
Assignee: Primerica Inc
•
Filing: 1951-05-08
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Granted: 1954-04-27
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Expires: 1971-05-08
Abstract
No abstract record available.
Inventors
- 👤 Birkland Stellan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 14:54
CPC Classifications
B; B65; B65B; B65B31/00; B65B31/02; B65B31/025
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2371186A
Cited
US2400419A
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US640234A
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US2039338A
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US2517323A
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US2561404A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-04-26 | 1957-10-26 | 1958-04-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-04-26 | 1961-10-26 | 1962-04-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-04-26 | 1965-10-26 | 1966-04-27 | $7700.00 | Window Closed / Lapsed |