US2507501A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pressure operated resistor
Assignee: Individual
•
Filing: 1945-07-14
•
Granted: 1950-05-16
•
Expires: 1965-07-14
Abstract
No abstract record available.
Inventors
- 👤 Clark James
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 20:11
CPC Classifications
H; H01; H01C; H01C10/00; H01C10/10; G; G01; G01L; G01L13/00; G01L13/02; G01L13/025; G01L9/00; G01L9/0041; G01L9/0051; G01L9/10
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1718494A
Cited
US2275675A
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US2365015A
Cited
US2319219A
Cited
US2260837A
Cited
US2318102A
Cited
US2360886A
Cited
US2400467A
Cited
US2398372A
Cited
US2398401A
Cited
US2405199A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-05-15 | 1953-11-14 | 1954-05-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-05-15 | 1957-11-14 | 1958-05-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-05-15 | 1961-11-14 | 1962-05-16 | $7700.00 | Window Closed / Lapsed |