US2255473A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Impulse measuring and recording apparatus
Assignee: General Electric Co
•
Filing: 1939-04-24
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Granted: 1941-09-09
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Expires: 1959-04-24
Abstract
No abstract record available.
Inventors
- 👤 Theodore A Rich
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 22:38
CPC Classifications
G; G01; G01D; G01D15/00; G01D15/24; G01D9/00; G01D9/02; G01D9/10; G01D9/16; G01R; G01R13/00; G01R13/04; G01R13/06; G01R15/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1944-09-08 | 1945-03-10 | 1945-09-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1948-09-08 | 1949-03-10 | 1949-09-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1952-09-08 | 1953-03-10 | 1953-09-09 | $7700.00 | Window Closed / Lapsed |