US2459281A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Two-way radio equipment for lifeboat service
Assignee: RCA Corp
•
Filing: 1945-01-08
•
Granted: 1949-01-18
•
Expires: 1965-01-08
Abstract
No abstract record available.
Inventors
- 👤 Joseph F Mcdonald
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 12:15
CPC Classifications
H; H04; H04B; H04B1/00; H04B1/38; H04B1/3805; H04B1/3827; H04B1/40; H04B1/54; H04L; H04L15/00; H04L15/04; H04L15/22
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
GB226626A
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GB236977A
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US2006440A
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US1916016A
Cited
US1970423A
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GB406975A
Cited
US2022049A
Cited
US2144936A
Cited
US2118917A
Cited
US2289794A
Cited
GB550430A
Cited
US2389786A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-01-18 | 1952-07-19 | 1953-01-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-01-18 | 1956-07-19 | 1957-01-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-01-18 | 1960-07-19 | 1961-01-18 | $7700.00 | Window Closed / Lapsed |