Patent US3048837A successfully refreshed from Google Patents.
US3048837A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Signal display system
Assignee: Individual
•
Filing: 1950-10-04
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Granted: 1962-08-07
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Expires: 1970-10-04
Abstract
No abstract record available.
Inventors
- 👤 Gerald E Hart
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 15:04
CPC Classifications
G; G01; G01S; G01S7/00; G01S7/02; G01S7/04; G01S7/06; G01S7/062; G01S7/024; G01S7/41; G01S7/415
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2423644A
Cited
FR864403A
Cited
US2445895A
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US2408848A
Cited
US2540536A
Cited
US2508571A
Cited
US2506127A
Cited
US2502394A
Cited
US2901747A
Cited
US2542825A
Cited
US2489615A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-08-06 | 1966-02-05 | 1966-08-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-08-06 | 1970-02-05 | 1970-08-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-08-06 | 1974-02-05 | 1974-08-07 | $7700.00 | Window Closed / Lapsed |