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Patent US2693559A successfully refreshed from Google Patents.
US2693559A
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Balance indicator for rebalanceable systems
Assignee: Leeds and Northrup Co
•
Filing: 1951-05-21
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Granted: 1954-11-02
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Expires: 1971-05-21
Abstract
No abstract record available.
Inventors
- 👤 John F Quereau
- 👤 Eugene E Pearson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 14:30
CPC Classifications
G; G01; G01K; G01K7/00; G01K7/02; G01K7/021
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2089878A
Cited
US2217254A
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US2292063A
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US2344116A
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US2400018A
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US2398341A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-11-01 | 1958-05-03 | 1958-11-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-11-01 | 1962-05-03 | 1962-11-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-11-01 | 1966-05-03 | 1966-11-02 | $7700.00 | Window Closed / Lapsed |