US2515344A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Radio beacon system
Assignee: Radio Patents Corp
•
Filing: 1947-03-07
•
Granted: 1950-07-18
•
Expires: 1967-03-07
Abstract
No abstract record available.
Inventors
- 👤 Guanella Gustav
- 👤 Steinmann Willi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 08:53
CPC Classifications
G; G01; G01S; G01S1/00; G01S1/02
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2210651A
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US2144203A
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US2253958A
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FR863451A
Cited
US2238965A
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US2314795A
Cited
US2313699A
Cited
US2288815A
Cited
US2320476A
Cited
US2328985A
Cited
US2394157A
Cited
US2429634A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-07-17 | 1954-01-16 | 1954-07-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-07-17 | 1958-01-16 | 1958-07-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-07-17 | 1962-01-16 | 1962-07-18 | $7700.00 | Window Closed / Lapsed |