US2534632A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Well surveying device
Assignee: Individual
•
Filing: 1948-03-29
•
Granted: 1950-12-19
•
Expires: 1968-03-29
Abstract
No abstract record available.
Inventors
- 👤 Alonzo L Smith
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 06:49
CPC Classifications
E; E21; E21B; E21B47/00; E21B47/08; G; G01; G01V; G01V3/00; G01V3/18; G01V3/20
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1946924A
Cited
US2072950A
Cited
US2102080A
Cited
US2167630A
Cited
US2313384A
Cited
US2317039A
Cited
US2228623A
Cited
US2267110A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-12-18 | 1954-06-19 | 1954-12-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-12-18 | 1958-06-19 | 1958-12-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-12-18 | 1962-06-19 | 1962-12-19 | $7700.00 | Window Closed / Lapsed |