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US2566102A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hydrostatic level
Assignee: Individual
•
Filing: 1948-05-24
•
Granted: 1951-08-28
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Expires: 1968-05-24
Abstract
No abstract record available.
Inventors
- 👤 Ford C Waldo
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 19:54
CPC Classifications
G; G01; G01C; G01C5/00; G01C5/04
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US413103A
Cited
US630856A
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US762072A
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US859903A
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US919934A
Cited
US1017638A
Cited
US1042248A
Cited
US1175352A
Cited
US2231162A
Cited
US2475007A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-08-27 | 1955-02-26 | 1955-08-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-08-27 | 1959-02-26 | 1959-08-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-08-27 | 1963-02-26 | 1963-08-28 | $7700.00 | Window Closed / Lapsed |