US2735731A
Expired / Lapsed
US
⏱️ 0.0 years remaining
freebairn
Assignee: —
•
Filing: —
•
Granted: 1956-02-21
•
Expires: 1973-02-21
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 22:45
CPC Classifications
G; G01; G01C; G01C19/00; G01C19/02; G01C19/04; G01C19/16; G01C19/22; Y; Y10; Y10S; Y10S33/00; Y10S33/06; Y10S33/07; Y10T; Y10T403/00; Y10T403/54; Y10T74/00; Y10T74/12; Y10T74/1229; Y10T74/1293
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USRE22330E
Cited
US1639336A
Cited
US1622267A
Cited
US2690014A
Cited
US2322292A
Cited
US2687648A
Cited
US2606447A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-02-20 | 1959-08-22 | 1960-02-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-02-20 | 1963-08-22 | 1964-02-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-02-20 | 1967-08-22 | 1968-02-21 | $7700.00 | Window Closed / Lapsed |