US3438253A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Thermal device for measuring direction and velocity of fluid flow
Assignee: Honeywell Inc
•
Filing: 1966-11-15
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Granted: 1969-04-15
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Expires: 1986-11-15
Abstract
No abstract record available.
Inventors
- 👤 Frederick W Kuether
- 👤 Albert M Richards
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 06:20
CPC Classifications
G; G01; G01F; G01F1/00; G01F1/68; G01F1/696; G01F1/698; A; A61; A61B; A61B5/00; A61B5/02; A61B5/026; A61B5/0275; A61B5/028; A61M; A61M25/00; A61M25/0043; A61M25/005
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US3352154A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-04-14 | 1972-10-14 | 1973-04-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-04-14 | 1976-10-14 | 1977-04-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-04-14 | 1980-10-14 | 1981-04-15 | $7700.00 | Window Closed / Lapsed |