US2518484A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for determining the depth of liquid in tanks
Assignee: Individual
•
Filing: 1946-01-18
•
Granted: 1950-08-15
•
Expires: 1966-01-18
Abstract
No abstract record available.
Inventors
- 👤 Joseph N Matthews
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 08:47
CPC Classifications
G; G01; G01F; G01F23/00; G01F23/14; G01F23/16; G01F23/165
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
DE304717C
Cited
US804570A
Cited
US1172650A
Cited
US1100867A
Cited
GB140546A
Cited
GB150349A
Cited
FR662939A
Cited
AT118729B
Cited
US1900775A
Cited
GB490248A
Cited
US2328954A
Cited
US2384618A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-08-14 | 1954-02-13 | 1954-08-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-08-14 | 1958-02-13 | 1958-08-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-08-14 | 1962-02-13 | 1962-08-15 | $7700.00 | Window Closed / Lapsed |