Patent US2805683A successfully refreshed from Google Patents.
US2805683A
Expired / Lapsed
US
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Pipe and method for making the same
Assignee: Lock Joint Pipe Co
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Filing: 1950-02-17
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Granted: 1957-09-10
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Expires: 1970-02-17
Abstract
No abstract record available.
Inventors
- 👤 Hugh F Kennison
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 23:44
CPC Classifications
B; B28; B28B; B28B21/00; B28B21/56; B28B21/60; B28B21/62; F; F16; F16L; F16L25/00; F16L25/0027; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49826; Y10T29/49863; Y10T29/49874
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2371107A
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US1910642A
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US1958872A
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US2138946A
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FR837937A
Cited
CH213654A
Cited
US2234643A
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US2270296A
Cited
US2348477A
Cited
US2662555A
Cited
US2639731A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-09-09 | 1961-03-11 | 1961-09-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-09-09 | 1965-03-11 | 1965-09-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-09-09 | 1969-03-11 | 1969-09-10 | $7700.00 | Window Closed / Lapsed |