US2958884A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Variable-diameter pipe line scraper
Assignee: Service Pipe Line Co
•
Filing: 1957-06-13
•
Granted: 1960-11-08
•
Expires: 1977-06-13
Abstract
No abstract record available.
Inventors
- 👤 Arthur M Hill
- 👤 Posy A Howard
- 👤 James A Fugate
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 23:23
CPC Classifications
B; B08; B08B; B08B9/00; B08B9/02; B08B9/027; B08B9/04; B08B9/053; B08B9/055; B08B9/0553
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
DE273808C
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GB190522072A
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US2219555A
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US2278026A
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US2552339A
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US2657506A
Cited
GB750592A
Cited
US2792807A
Cited
US2812624A
Cited
US2791123A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-11-08 | 1964-05-09 | 1964-11-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-11-08 | 1968-05-09 | 1968-11-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-11-08 | 1972-05-09 | 1972-11-08 | $7700.00 | Window Closed / Lapsed |