US2660144A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Indicator for visually observing flow of a liquid through a pipe
Assignee: REMCO Inc
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Filing: 1951-10-26
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Granted: 1953-11-24
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Expires: 1971-10-26
Abstract
No abstract record available.
Inventors
- 👤 Kenneth M Newcum
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 21:29
CPC Classifications
G; G01; G01P; G01P13/00; G01P13/0006; G01P13/0026; F; F16; F16L; F16L2101/00; F16L2101/30
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) | 1956-11-23 | 1957-05-25 | 1957-11-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-11-23 | 1961-05-25 | 1961-11-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-11-23 | 1965-05-25 | 1965-11-24 | $7700.00 | Window Closed / Lapsed |