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US2869027A
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Signalling apparatus
Assignee: Raytheon Co
•
Filing: 1955-03-18
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Granted: 1959-01-13
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Expires: 1975-03-18
Abstract
No abstract record available.
Inventors
- 👤 Bertram M Harrison
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 22:12
CPC Classifications
G; G01; G01S; G01S7/00; G01S7/52; G01S7/56; G01S7/62; G01S7/629
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1955332A
Cited
US2200745A
Cited
GB494263A
Cited
US2263377A
Cited
US2468032A
Cited
US2414444A
Cited
US2389995A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-01-12 | 1962-07-14 | 1963-01-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-01-12 | 1966-07-14 | 1967-01-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-01-12 | 1970-07-14 | 1971-01-13 | $7700.00 | Window Closed / Lapsed |