US2802520A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Transportation system for viscous liquids
Assignee: ELECTRIC PIPE LINE Inc
•
Filing: 1953-11-23
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Granted: 1957-08-13
•
Expires: 1973-11-23
Abstract
No abstract record available.
Inventors
- 👤 William J Trabilcy
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 20:21
CPC Classifications
F; F23; F23K; F23K5/00; F23K5/02; F23K5/06; F23K5/04; F23K5/14; F23K5/20; Y; Y10; Y10T; Y10T137/00; Y10T137/6416; Y10T137/6552; Y10T137/6606; Y10T137/8593; Y10T137/85978; Y10T137/86035
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1492742A
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US1617470A
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US1994838A
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US1983043A
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GB445720A
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GB445724A
Cited
US2234555A
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US2224403A
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US2355693A
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US2275689A
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US2306831A
Cited
US2597261A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-08-12 | 1961-02-11 | 1961-08-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-08-12 | 1965-02-11 | 1965-08-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-08-12 | 1969-02-11 | 1969-08-13 | $7700.00 | Window Closed / Lapsed |