US2724271A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Thermal flowmeter
Assignee: Sunoco Inc
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Filing: 1950-01-03
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Granted: 1955-11-22
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Expires: 1970-01-03
Abstract
No abstract record available.
Inventors
- 👤 Elbert N Shawhan
- 👤 Wright J Rondle
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 04:43
CPC Classifications
G; G01; G01F; G01F1/00; G01F1/704; G01F1/708; G01F1/7084
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
60 words
APPARATUS FOR THE MEASUREMENT OF FLUID FLOW COMPRISING MEANS IMPARTING IDENTIFYING CHARACTERISTICS TO SLUGS OF THE FLOWING FLUID, MEANS DOWNSTREAM OF THE FIRST MENTIONED MEANS RESPONSIVE TO SAID IDENTIFYING CHARACTERISTICS OF THE IDENTIFIED SLUGS CONTROLLING THE FIRST MENTIONED MEANS TO MAINTAIN SUBSTANTIALLY CONSTANT THE SPACING OF THE IDENTIFIED SLUGS ALONG THE FLOWING FLUID, AND MEANS COUNTING THE IDENTIFIED FLOWING SLUGS.
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) | 1958-11-21 | 1959-05-23 | 1959-11-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-11-21 | 1963-05-23 | 1963-11-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-11-21 | 1967-05-23 | 1967-11-22 | $7700.00 | Window Closed / Lapsed |