Patent US2532290A successfully refreshed from Google Patents.
US2532290A
Expired / Lapsed
US
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Compound indicating instrument
Assignee: Individual
•
Filing: 1945-12-29
•
Granted: 1950-12-05
•
Expires: 1965-12-29
Abstract
No abstract record available.
Inventors
- 👤 Jr Charles W Cochran
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 23:28
CPC Classifications
G; G01; G01L; G01L3/00; G01L3/24; G01L3/242; G01F; G01F9/00; G01F9/001; G01P; G01P5/00
Claims Analysis
Total Claims: 0
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-12-04 | 1954-06-05 | 1954-12-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-12-04 | 1958-06-05 | 1958-12-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-12-04 | 1962-06-05 | 1962-12-05 | $7700.00 | Window Closed / Lapsed |