Patent US2478773A successfully refreshed from Google Patents.
US2478773A
Expired / Lapsed
US
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Magnetic measuring device and method
Assignee: Northrop Grumman Space and Mission Systems Corp
•
Filing: 1943-06-21
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Granted: 1949-08-09
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Expires: 1963-06-21
Abstract
No abstract record available.
Inventors
- 👤 Mcdill Rex De Ore
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 12:51
CPC Classifications
G; G01; G01B; G01B7/00; G01B7/02; G01B7/06; G01B7/10
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1807411A
Cited
US2020067A
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GB368006A
Cited
US2008141A
Cited
US1952185A
Cited
US1964141A
Cited
US2116119A
Cited
US2111210A
Cited
US2226275A
Cited
US2337231A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-08-08 | 1953-02-07 | 1953-08-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-08-08 | 1957-02-07 | 1957-08-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-08-08 | 1961-02-07 | 1961-08-09 | $7700.00 | Window Closed / Lapsed |