US2847642A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Flux gate compass
Assignee: Lanteris Space LLC
•
Filing: 1952-05-10
•
Granted: 1958-08-12
•
Expires: 1972-05-10
Abstract
No abstract record available.
Inventors
- 👤 David B Smith
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 06:21
CPC Classifications
G; G01; G01C; G01C17/00; G01C17/02; G01C17/28; G01C17/30
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2435276A
Cited
US2476273A
Cited
US2424562A
Cited
US2439701A
Cited
US2524360A
Cited
US2749506A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-08-11 | 1962-02-10 | 1962-08-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-08-11 | 1966-02-10 | 1966-08-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-08-11 | 1970-02-10 | 1970-08-12 | $7700.00 | Window Closed / Lapsed |