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Patent US2500953A successfully refreshed from Google Patents.
US2500953A
Expired / Lapsed
US
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Magnetoresistor
Assignee: Individual
•
Filing: 1948-09-24
•
Granted: 1950-03-21
•
Expires: 1968-09-24
Abstract
No abstract record available.
Inventors
- 👤 Max L Libman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 20:06
CPC Classifications
H; H01; H01H; H01H1/00; H01H1/06; H01H1/065; G; G05; G05B; G05B1/00; G05B1/01; G05B1/02; G05B1/025
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2149782A
Cited
US716334A
Cited
GB190122142A
Cited
US748306A
Cited
US774922A
Cited
US811654A
Cited
US1963496A
Cited
US2242366A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-03-20 | 1953-09-19 | 1954-03-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-03-20 | 1957-09-19 | 1958-03-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-03-20 | 1961-09-19 | 1962-03-21 | $7700.00 | Window Closed / Lapsed |