US2540807A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Center of gravity indicator
Assignee: General Electric Co
•
Filing: 1944-05-25
•
Granted: 1951-02-06
•
Expires: 1964-05-25
Abstract
No abstract record available.
Inventors
- 👤 Theodore M Berry
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 11:04
CPC Classifications
G; G01; G01M; G01M1/00; G01M1/12; G01M1/122; G01M1/125; G06; G06G; G06G7/00; G06G7/48; G06G7/70
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1407078A
Cited
DE356158C
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US1864876A
Cited
GB387887A
Cited
US2255814A
Cited
US2336142A
Cited
US2242011A
Cited
US2373504A
Cited
US2391243A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-02-05 | 1954-08-07 | 1955-02-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-02-05 | 1958-08-07 | 1959-02-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-02-05 | 1962-08-07 | 1963-02-06 | $7700.00 | Window Closed / Lapsed |