US2889635A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Artificial aircraft simulator for radar systems
Assignee: Gilfillan Bros Inc
•
Filing: 1954-03-11
•
Granted: 1959-06-09
•
Expires: 1974-03-11
Abstract
No abstract record available.
Inventors
- 👤 Thomas J Johnson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 18:59
CPC Classifications
G; G09; G09B; G09B9/00; G09B9/54; G01; G01S; G01S7/00; G01S7/02; G01S7/40; G01S7/4004; G01S7/4021
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2471315A
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US2529468A
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US2506998A
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US2677199A
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US2605556A
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US2714047A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-06-08 | 1962-12-08 | 1963-06-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-06-08 | 1966-12-08 | 1967-06-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-06-08 | 1970-12-08 | 1971-06-09 | $7700.00 | Window Closed / Lapsed |