Patent US2610506A successfully refreshed from Google Patents.
US2610506A
Expired / Lapsed
US
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Instrument for locating the liquid level in wells
Assignee: Individual
•
Filing: 1949-01-07
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Granted: 1952-09-16
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Expires: 1969-01-07
Abstract
No abstract record available.
Inventors
- 👤 David B Taliaferro
- 👤 Clifford F Mcclung
- 👤 Fritz G Mueller
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 06:00
CPC Classifications
G; G01; G01C; G01C13/00; G01C13/002; G01C13/004; E; E21; E21B; E21B47/00; E21B47/04; E21B47/047
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US576208A
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US1227286A
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US1695701A
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GB409102A
Cited
US2147500A
Cited
US2134428A
Cited
US2139810A
Cited
US2275474A
Cited
US2394437A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-09-16 | 1956-03-17 | 1956-09-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-09-16 | 1960-03-17 | 1960-09-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-09-16 | 1964-03-17 | 1964-09-16 | $7700.00 | Window Closed / Lapsed |