US2931670A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fluid tight pipe joint with replaceable means for preventing overtightening
Assignee: Individual
•
Filing: 1956-10-01
•
Granted: 1960-04-05
•
Expires: 1976-10-01
Abstract
No abstract record available.
Inventors
- 👤 Walter L Church
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 10:13
CPC Classifications
F; F16; F16L; F16L15/00; F16L15/001; E; E21; E21B; E21B17/00; E21B17/02; E21B17/04; E21B17/042; E21B17/043; F16L15/006; F16L15/008
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US1081549A
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US1093316A
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US1350078A
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US1741969A
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US1776280A
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US1854215A
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US2075427A
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US2348380A
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US2461107A
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US2440257A
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US2596594A
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US2641479A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-04-05 | 1963-10-05 | 1964-04-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-04-05 | 1967-10-05 | 1968-04-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-04-05 | 1971-10-05 | 1972-04-05 | $7700.00 | Window Closed / Lapsed |