US2596897A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Liquid level gauge
Assignee: VISUGAGE Inc
•
Filing: 1948-10-09
•
Granted: 1952-05-13
•
Expires: 1968-10-09
Abstract
No abstract record available.
Inventors
- 👤 Ervin C Haatvedt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 04:04
CPC Classifications
G; G01; G01F; G01F23/00; G01F23/22; G01F23/28; G01F23/284; G01F23/292
Claims Analysis
Total Claims: 0
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US2246464A
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US2378249A
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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) | 1955-05-13 | 1955-11-12 | 1956-05-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-05-13 | 1959-11-12 | 1960-05-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-05-13 | 1963-11-12 | 1964-05-13 | $7700.00 | Window Closed / Lapsed |