US3514521A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Collision avoidance radar trainer
Assignee: Singer General Precision Inc
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Filing: 1967-09-29
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Granted: 1970-05-26
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Expires: 1987-09-29
Abstract
No abstract record available.
Inventors
- 👤 William K Burchard
- 👤 William P Jameson
- 👤 Edward F Magee
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 05:27
CPC Classifications
G; G09; G09B; G09B9/00; G09B9/54; G01; G01S; G01S7/00; G01S7/02; G01S7/40; G01S7/4052; G06; G06F; G06F3/00; G06F3/01; G06F3/02; G01S7/4082
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-05-25 | 1973-11-24 | 1974-05-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-05-25 | 1977-11-24 | 1978-05-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-05-25 | 1981-11-24 | 1982-05-26 | $7700.00 | Window Closed / Lapsed |