US2714330A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Navigational indicating and position projection instrument
Assignee: Individual
•
Filing: 1952-08-25
•
Granted: 1955-08-02
•
Expires: 1972-08-25
Abstract
No abstract record available.
Inventors
- 👤 Robert E Frederickson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 17:20
CPC Classifications
G; G01; G01C; G01C21/00; G01C21/20; G01C21/22; G01S; G01S1/00; G01S1/02; Y; Y10; Y10S; Y10S116/00; Y10S116/15
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2108342A
Cited
US2323337A
Cited
US2353475A
Cited
US2608094A
Cited
US2364731A
Cited
US2421077A
Cited
US2637848A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1958-08-01 | 1959-01-31 | 1959-08-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-08-01 | 1963-01-31 | 1963-08-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-08-01 | 1967-01-31 | 1967-08-02 | $7700.00 | Window Closed / Lapsed |