Patent US2651939A successfully refreshed from Google Patents.
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 23:15
CPC Classifications
G; G01; G01F; G01F23/00; G01F23/14; G01F23/18
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US1171480A
Cited
FR663521A
Cited
US1953819A
Cited
DE712023C
Cited
US2344642A
Cited
GB559149A
Cited
US2361738A
Cited
US2405199A
Cited
US2421907A
Cited
US2500340A
Cited
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 |