US1583941A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Oil-level indicator
Assignee: Individual
•
Filing: 1920-12-22
•
Granted: 1926-05-11
•
Expires: 1940-12-22
Abstract
No abstract record available.
Inventors
- 👤 Will D Swiggart
- 👤 Francis M C Usher
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 13:18
CPC Classifications
G; G01; G01F; G01F23/00; Y; Y10; Y10T; Y10T137/00; Y10T137/8158; Y10T137/8342; Y10T137/8593; Y10T137/8807; Y10T137/88078; Y10T137/88102
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1929-05-10 | 1929-11-09 | 1930-05-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1933-05-10 | 1933-11-09 | 1934-05-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1937-05-10 | 1937-11-09 | 1938-05-11 | $7700.00 | Window Closed / Lapsed |