US2651939A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for measuring the contents of large tanks
Assignee: Comstock and Wescott Inc
•
Filing: 1948-12-27
•
Granted: 1953-09-15
•
Expires: 1968-12-27
Abstract
No abstract record available.
Inventors
- 👤 Eastman A Weaver
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 21:55
CPC Classifications
G; G01; G01F; G01F23/00; G01F23/14; G01F23/18
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1171480A
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FR663521A
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US1953819A
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DE712023C
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US2344642A
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GB559149A
Cited
US2361738A
Cited
US2405199A
Cited
US2421907A
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US2500340A
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US2509421A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-09-14 | 1957-03-16 | 1957-09-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-09-14 | 1961-03-16 | 1961-09-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-09-14 | 1965-03-16 | 1965-09-15 | $7700.00 | Window Closed / Lapsed |