US3066693A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Float valve for drill pipe and the like
Assignee: Individual
•
Filing: 1960-02-18
•
Granted: 1962-12-04
•
Expires: 1980-02-18
Abstract
No abstract record available.
Inventors
- 👤 Jr Julian S Taylor
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 15:13
CPC Classifications
E; E21; E21B; E21B34/00; E21B34/06; E21B34/10; E21B21/00; E21B21/10; E21B34/14; E21B2200/00; E21B2200/05; Y; Y10; Y10T; Y10T137/00; Y10T137/7504; Y10T137/7722; Y10T137/7837; Y10T137/7854; Y10T137/7857; Y10T137/7898; Y10T137/7901
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US1286672A
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US1827233A
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DE503294C
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US2578076A
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US2738240A
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US2851314A
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US2853325A
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US2921601A
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US2878826A
Cited
US3016914A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-12-03 | 1966-06-04 | 1966-12-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-12-03 | 1970-06-04 | 1970-12-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-12-03 | 1974-06-04 | 1974-12-04 | $7700.00 | Window Closed / Lapsed |