US2676488A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Quantitative flow indicator
Assignee: TECHNICAL INSTR LAB
•
Filing: 1949-08-15
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Granted: 1954-04-27
•
Expires: 1969-08-15
Abstract
No abstract record available.
Inventors
- 👤 Wilcox John Stewart
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 12:36
CPC Classifications
G; G01; G01F; G01F1/00; G01F1/05; G01F1/20; G01F1/28
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
GB189918315A
Cited
US931484A
Cited
US1614530A
Cited
US2072369A
Cited
US2359592A
Cited
GB570403A
Cited
US2355694A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-04-26 | 1957-10-26 | 1958-04-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-04-26 | 1961-10-26 | 1962-04-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-04-26 | 1965-10-26 | 1966-04-27 | $7700.00 | Window Closed / Lapsed |