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US2446258A
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Compass
Assignee: Lockheed Martin Corp
•
Filing: 1943-11-29
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Granted: 1948-08-03
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Expires: 1963-11-29
Abstract
No abstract record available.
Inventors
- 👤 Robert C Burt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 18:26
CPC Classifications
G; G01; G01C; G01C17/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US682585A
Cited
US1216953A
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US1533683A
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US1961312A
Cited
GB407946A
Cited
US2116103A
Cited
US2087086A
Cited
US2118082A
Cited
US2215622A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1951-08-03 | 1952-02-02 | 1952-08-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-08-03 | 1956-02-02 | 1956-08-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-08-03 | 1960-02-02 | 1960-08-03 | $7700.00 | Window Closed / Lapsed |