US3020527A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Position indicating system
Assignee: RTX Corp
•
Filing: 1957-05-13
•
Granted: 1962-02-06
•
Expires: 1977-05-13
Abstract
No abstract record available.
Inventors
- 👤 Frederick B Maclaren
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 19:12
CPC Classifications
G; G08; G08C; G08C19/00; G08C19/02; G08C19/06
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1331065A
Cited
US1528686A
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DE737882C
Cited
US2450192A
Cited
US2430757A
Cited
US2509210A
Cited
US2483994A
Cited
US2606315A
Cited
US2598810A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-02-05 | 1965-08-07 | 1966-02-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-02-05 | 1969-08-07 | 1970-02-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-02-05 | 1973-08-07 | 1974-02-06 | $7700.00 | Window Closed / Lapsed |