Patent US2724099A successfully refreshed from Google Patents.
US2724099A
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US
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Signalling apparatus
Assignee: Raytheon Co
•
Filing: 1942-06-26
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Granted: 1955-11-15
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Expires: 1962-06-26
Abstract
No abstract record available.
Inventors
- 👤 Bertram M Harrison
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 15:01
CPC Classifications
G; G01; G01S; G01S7/00; G01S7/52; G01S7/56; G01S7/62; G01S1/00; G01S1/72
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1225796A
Cited
GB490599A
Cited
US2231929A
Cited
US2209191A
Cited
US2296032A
Cited
US2225046A
Cited
US2223983A
Cited
US2332881A
Cited
GB546202A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1958-11-14 | 1959-05-16 | 1959-11-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-11-14 | 1963-05-16 | 1963-11-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-11-14 | 1967-05-16 | 1967-11-15 | $7700.00 | Window Closed / Lapsed |