US2758474A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for measurement of levels of materials in tanks
Assignee: Individual
•
Filing: 1953-02-16
•
Granted: 1956-08-14
•
Expires: 1973-02-16
Abstract
No abstract record available.
Inventors
- 👤 Alfred H Mckinney
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 06:45
CPC Classifications
G; G01; G01F; G01F23/00; G01F23/0023; G01F23/30; G01F23/40; G01F23/44
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1188793A
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US1375131A
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US1522355A
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US1881394A
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US2629261A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-08-14 | 1960-02-13 | 1960-08-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-08-14 | 1964-02-13 | 1964-08-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-08-14 | 1968-02-13 | 1968-08-14 | $7700.00 | Window Closed / Lapsed |