US3626749A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fluid density measuring apparatus
Assignee: Gemalto Terminals Ltd
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Filing: 1970-01-28
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Granted: 1971-12-14
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Expires: 1990-01-28
Abstract
Abstract A FLUID DENSITY MEASURING APPARATUS INCLUDES AN ELASTICALLY RESILIENT HOLLOW VIBRATORY TUBE WHICH CAN BE CONTACTED BY A FLUID, THE DENSITY OF WHICH IS TO BE MEASURED. A PNEUMATIC EMBODIMENT THEREOF INCLUDES PULSATION MEANS FOR SUPPLYING A PRESSURIZED FLUID AGAINST THE EXTERNAL SURFACE OF THE TUBE TO EXCITE THE TUBE INTO NATURAL VIBRATION.
Inventors
- 👤 William Edward Abbotts
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 23:15
CPC Classifications
G; G01; G01N; G01N9/00; G01N9/002; G01N2009/006
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-12-13 | 1975-06-14 | 1975-12-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-12-13 | 1979-06-14 | 1979-12-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-12-13 | 1983-06-14 | 1983-12-14 | $7700.00 | Window Closed / Lapsed |