US3548657A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Device for an outside display of the level of a liquid contained within a tank
Assignee: Individual
•
Filing: 1968-11-19
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Granted: 1970-12-22
•
Expires: 1988-11-19
Abstract
No abstract record available.
Inventors
- 👤 Maria Panerai
- 👤 Giuseppe Panerai
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 21:27
CPC Classifications
G; G01; G01F; G01F23/00; G01F23/22; G01F23/28; G01F23/284; G01F23/292; G01F23/2921; G01F23/2922; G01F23/2925; G01F23/2927; F; F16; F16L; F16L41/00; F16L41/08; F16L41/082; F16L41/084
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-12-21 | 1974-06-22 | 1974-12-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-12-21 | 1978-06-22 | 1978-12-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-12-21 | 1982-06-22 | 1982-12-22 | $7700.00 | Window Closed / Lapsed |