Patent US2972349A successfully refreshed from Google Patents.
US2137887A
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Method and apparatus for conduit construction
Assignee: Individual
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Filing: 1934-07-14
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Granted: 1938-11-22
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Expires: 1954-07-14
Abstract
No abstract record available.
Inventors
- 👤 Charles W Abbott
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 16:08
CPC Classifications
B; B26; B26D; B26D3/00; B26D3/001; B29; B29C; B29C48/00; B29C48/03; B29C48/09; B29C48/11; B29C48/12; B29C48/25; B29C48/30; B29C48/301; G; G02; G02B; G02B6/00; G02B6/44; G02B6/4479; H; H01; H01B; H01B13/00; B29L; B29L2031/00; B29L2031/60; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49826; Y10T29/49863; Y10T29/4987; Y10T29/49876
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1941-11-21 | 1942-05-23 | 1942-11-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1945-11-21 | 1946-05-23 | 1946-11-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1949-11-21 | 1950-05-23 | 1950-11-22 | $7700.00 | Window Closed / Lapsed |