US3248793A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Navigational instrument
Assignee: Individual
•
Filing: 1962-11-07
•
Granted: 1966-05-03
•
Expires: 1982-11-07
Abstract
No abstract record available.
Inventors
- 👤 Warren D Anderson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 13:42
CPC Classifications
G; G01; G01C; G01C21/00; G01C21/20
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
102 words
IN AN INSTRUMENT FOR DETERMINING THE BEARING OF A CHARTED OBJECT AND PLOTTING THE CORRESPONDING LINE OF POSITION ON A CHART HAVING A GRIP PATTERN THEREON COMPRISING IN COMBINATION, A PLOTTING STRAIGHT EDGE MEANS; A COMPASS CARD PIVOTED RELATIVE TO SAID STRAIGHT EDGE MEANS AND HAVING AN ALIGNMENT PATTERN THEREON INCLUDING A NORTH AXIS THAT IS DISPLACED FROM THE NORTH SEEKING RADIUS OF SAID CARD BY AN ANGLE EQUAL TO THE MAGNETIC VARIATION OF SAID CHART; MEANS FOR ESTABLISHING A LINE OF DIRECTION PARALLEL TO SAID STRAIGHT EDGE MEANS; AND MEANS FOR SELECTIVELY LOCKING SAID CARD RELATIVE TO SAID STRAIGHT EDGE MEANS.
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) | 1969-05-02 | 1969-11-01 | 1970-05-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-05-02 | 1973-11-01 | 1974-05-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-05-02 | 1977-11-01 | 1978-05-03 | $7700.00 | Window Closed / Lapsed |