Patent US2852943A successfully refreshed from Google Patents.
US2852943A
Expired / Lapsed
US
⏱️ 0.0 years remaining
sedgfield
Assignee: —
•
Filing: —
•
Granted: 1958-09-23
•
Expires: 1975-09-23
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 21:10
CPC Classifications
G; G01; G01C; G01C19/00; G01C19/02; G01C19/34; G01C19/38; B; B64; B64G; B64G1/00; B64G1/22; B64G1/24; B64G1/28; B64G1/286; G01C19/04; Y; Y10; Y10T; Y10T74/00; Y10T74/12; Y10T74/1261; Y10T74/1275; Y10T74/1282
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1639233A
Cited
US1801619A
Cited
US2075797A
Cited
US2349758A
Cited
US2534824A
Cited
US2613538A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-09-22 | 1962-03-24 | 1962-09-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-09-22 | 1966-03-24 | 1966-09-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-09-22 | 1970-03-24 | 1970-09-23 | $7700.00 | Window Closed / Lapsed |