Patent US2418880A successfully refreshed from Google Patents.
US2418880A
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US
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Device for cleaning pipe lines
Assignee: Standard Oil Development Co
•
Filing: 1944-01-25
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Granted: 1947-04-15
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Expires: 1964-01-25
Abstract
No abstract record available.
Inventors
- 👤 Cecil J Haynes
- 👤 Swain Saint Elmo
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 19:48
CPC Classifications
B; B08; B08B; B08B9/00; B08B9/02; B08B9/027; B08B9/04; B08B9/053; B08B9/055; B08B9/0553; Y; Y10; Y10T; Y10T74/00; Y10T74/19; Y10T74/19219; Y10T74/19251; Y10T74/19256; Y10T74/19274; Y10T74/19284; Y10T74/19293; Y10T74/19298; Y10T74/19316
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US675800A
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US708881A
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US812361A
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US793204A
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US894557A
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US928863A
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US1030634A
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US1810450A
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US1908339A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1950-04-14 | 1950-10-14 | 1951-04-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1954-04-14 | 1954-10-14 | 1955-04-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1958-04-14 | 1958-10-14 | 1959-04-15 | $7700.00 | Window Closed / Lapsed |