US2663520A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Glide path control system
Assignee: Collins Radio Co
•
Filing: 1945-03-03
•
Granted: 1953-12-22
•
Expires: 1965-03-03
Abstract
No abstract record available.
Inventors
- 👤 Francis L Moseley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 15:05
CPC Classifications
G; G05; G05D; G05D1/00; G05D1/04; G05D1/06; G05D1/0607; G05D1/0653; G05D1/0676; G01; G01S; G01S1/00; G01S1/02
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1958259A
Cited
US2133285A
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US2159142A
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US2322225A
Cited
US2264056A
Cited
US2321582A
Cited
US2253508A
Cited
US2423336A
Cited
US2423337A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-12-21 | 1957-06-22 | 1957-12-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-12-21 | 1961-06-22 | 1961-12-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-12-21 | 1965-06-22 | 1965-12-22 | $7700.00 | Window Closed / Lapsed |