US2647941A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Antenna mast
Assignee: Dayton Aircraft Products Inc
•
Filing: 1949-12-14
•
Granted: 1953-08-04
•
Expires: 1969-12-14
Abstract
No abstract record available.
Inventors
- 👤 William U Matson
- 👤 William K Barrett
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 14:36
CPC Classifications
H; H01; H01Q; H01Q1/00; H01Q1/27; H01Q1/28; H01Q1/285; Y; Y10; Y10T; Y10T24/00; Y10T24/21; Y10T24/2177; Y10T403/00; Y10T403/70; Y10T403/7047
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US544959A
Cited
US1610442A
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US1895493A
Cited
US2046102A
Cited
US2149808A
Cited
US2368618A
Cited
US2549665A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-08-03 | 1957-02-02 | 1957-08-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-08-03 | 1961-02-02 | 1961-08-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-08-03 | 1965-02-02 | 1965-08-04 | $7700.00 | Window Closed / Lapsed |