Patent US3660685A successfully refreshed from Google Patents.
Patent US3703395A successfully refreshed from Google Patents.
Patent US2651938A successfully refreshed from Google Patents.
US2651938A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Tank gauging apparatus
Assignee: Standard Oil Development Co
•
Filing: 1950-05-31
•
Granted: 1953-09-15
•
Expires: 1970-05-31
Abstract
No abstract record available.
Inventors
- 👤 John J Heigl
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 22:30
CPC Classifications
G; G01; G01F; G01F23/00; G01F23/14
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
DE356945C
Cited
FR853933A
Cited
US1361576A
Cited
US1974857A
Cited
US1954142A
Cited
US2168106A
Cited
US2276794A
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 |