US2803992A
Expired / Lapsed
US
⏱️ 0.0 years remaining
baboz
Assignee: —
•
Filing: —
•
Granted: 1957-08-27
•
Expires: 1974-08-27
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 08:07
CPC Classifications
G; G01; G01C; G01C11/00; G01C11/02; G01C11/04; G01C11/06
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1590461A
Cited
US1467163A
Cited
US1478693A
Cited
US2085498A
Cited
US2492870A
Cited
US2647317A
Cited
US2574123A
Cited
US2552975A
Cited
US2693129A
Cited
US2753756A
Cited
US2744442A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-08-26 | 1961-02-25 | 1961-08-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-08-26 | 1965-02-25 | 1965-08-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-08-26 | 1969-02-25 | 1969-08-27 | $7700.00 | Window Closed / Lapsed |