Patent US3249685A successfully refreshed from Google Patents.
US3249685A
Expired / Lapsed
US
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Electrically conductive pipe joint
Assignee: Amsted Industries Inc
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Filing: 1963-10-15
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Granted: 1966-05-03
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Expires: 1983-10-15
Abstract
No abstract record available.
Inventors
- 👤 Jr William M Heflin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 11:15
CPC Classifications
F; F16; F16L; F16L25/00; F16L25/01; H; H01; H01R; H01R4/00; H01R4/58; H01R4/60; Y; Y10; Y10S; Y10S277/00; Y10S277/919
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-05-02 | 1969-11-01 | 1970-05-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-05-02 | 1973-11-01 | 1974-05-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-05-02 | 1977-11-01 | 1978-05-03 | $7700.00 | Window Closed / Lapsed |