US2502132A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pickup for use in acceleration indicating, measuring, and recording apparatus
Assignee: Individual
•
Filing: 1949-01-05
•
Granted: 1950-03-28
•
Expires: 1969-01-05
Abstract
No abstract record available.
Inventors
- 👤 Philip C Efromson
- 👤 Robert C Lewis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 13:42
CPC Classifications
H; H01; H01J; H01J21/00; H01J21/02; H01J21/06; H01J21/08; G; G01; G01P; G01P15/00; G01P15/02; G01P15/08
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2130648A
Cited
US2110449A
Cited
US2210970A
Cited
US2311427A
Cited
US2371626A
Cited
US2436753A
Cited
US2427285A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-03-27 | 1953-09-26 | 1954-03-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-03-27 | 1957-09-26 | 1958-03-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-03-27 | 1961-09-26 | 1962-03-28 | $7700.00 | Window Closed / Lapsed |