US2660804A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Level indicating device for house trailers
Assignee: Individual
•
Filing: 1952-01-26
•
Granted: 1953-12-01
•
Expires: 1972-01-26
Abstract
No abstract record available.
Inventors
- 👤 Michael L Mundy
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 05:15
CPC Classifications
G; G01; G01C; G01C9/00; G01C9/18; G01C9/24; G01B; G01B5/00; G01B5/24
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US449609A
Cited
FR319805A
Cited
US948523A
Cited
US1456431A
Cited
FR681616A
Cited
US1940808A
Cited
US1986149A
Cited
US2129695A
Cited
US2277071A
Cited
US2469506A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-11-30 | 1957-06-01 | 1957-12-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-11-30 | 1961-06-01 | 1961-12-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-11-30 | 1965-06-01 | 1965-12-01 | $7700.00 | Window Closed / Lapsed |