Patent US2334577A successfully refreshed from Google Patents.
US2334577A
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Apparatus for scoring coated pipe
Assignee: Standard Oil Company of California
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Filing: 1942-05-11
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Granted: 1943-11-16
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Expires: 1962-05-11
Abstract
No abstract record available.
Inventors
- 👤 William R Postlewaite
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 10:31
CPC Classifications
B; B26; B26D; B26D3/00; B26D3/08; B29; B29C; B29C63/00; B29C63/0004; Y; Y10; Y10S; Y10S83/00; Y10S83/924; Y10T; Y10T82/00; Y10T82/16; Y10T82/16147; Y10T82/16181; Y10T83/00; Y10T83/02; Y10T83/0333; Y10T83/0363; Y10T83/283; Y10T83/465; Y10T83/4757; Y10T83/4763; Y10T83/869; Y10T83/8798; Y10T83/8799
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) | 1946-11-15 | 1947-05-17 | 1947-11-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1950-11-15 | 1951-05-17 | 1951-11-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1954-11-15 | 1955-05-17 | 1955-11-16 | $7700.00 | Window Closed / Lapsed |