Patent US2590233A successfully refreshed from Google Patents.
US2590233A
Expired / Lapsed
US
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Feeler tool for casing protuberances
Assignee: Individual
•
Filing: 1949-02-05
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Granted: 1952-03-25
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Expires: 1969-02-05
Abstract
No abstract record available.
Inventors
- 👤 Elmo L Condra
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 08:06
CPC Classifications
E; E21; E21B; E21B47/00; E21B47/09
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US51362A
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US953666A
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US1460436A
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US2326528A
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US2347746A
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US2377501A
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US2379138A
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US2392144A
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US2517603A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-03-25 | 1955-09-24 | 1956-03-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-03-25 | 1959-09-24 | 1960-03-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-03-25 | 1963-09-24 | 1964-03-25 | $7700.00 | Window Closed / Lapsed |