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US2723562A
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Flow velocity indicating devices
Assignee: Dorr Oliver Inc
•
Filing: 1952-08-13
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Granted: 1955-11-15
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Expires: 1972-08-13
Abstract
No abstract record available.
Inventors
- 👤 William A Lutz
- 👤 Maitland John Digby
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 16:31
CPC Classifications
G; G01; G01F; G01F1/00; G01F1/05; G01F1/10; G01F1/103
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1786025A
Cited
US1984630A
Cited
US2204463A
Cited
FR799156A
Cited
US2623389A
Cited
US2557314A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1958-11-14 | 1959-05-16 | 1959-11-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-11-14 | 1963-05-16 | 1963-11-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-11-14 | 1967-05-16 | 1967-11-15 | $7700.00 | Window Closed / Lapsed |