US2914922A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hydraulic system for extending and retracting an antenna mast or the like
Assignee: UNITRON CORP
•
Filing: 1956-04-06
•
Granted: 1959-12-01
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Expires: 1976-04-06
Abstract
No abstract record available.
Inventors
- 👤 David B Gibson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 18:38
CPC Classifications
H; H01; H01Q; H01Q1/00; H01Q1/08; H01Q1/10; H01Q1/103
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US2592180A
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US2683967A
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US2694999A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-11-30 | 1963-06-01 | 1963-12-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-11-30 | 1967-06-01 | 1967-12-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-11-30 | 1971-06-01 | 1971-12-01 | $7700.00 | Window Closed / Lapsed |