Patent US2768704A successfully refreshed from Google Patents.
US2768704A
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US
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Apparatus for facilitating flow of liquid through gathering pipe lines to a pump supplying a main pressure line
Assignee: Individual
•
Filing: 1954-07-20
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Granted: 1956-10-30
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Expires: 1974-07-20
Abstract
No abstract record available.
Inventors
- 👤 John T Cronkhite
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 17:09
CPC Classifications
F; F04; F04B; F04B53/00; F04B53/06; F04B11/00; F04B11/0008; F04B11/0016; F04B11/0025; F04B53/10; F04B53/1037; Y; Y10; Y10T; Y10T137/00; Y10T137/2931; Y10T137/3003; Y10T137/3084; Y10T137/309; Y10T137/3099
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-10-30 | 1960-04-30 | 1960-10-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-10-30 | 1964-04-30 | 1964-10-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-10-30 | 1968-04-30 | 1968-10-30 | $7700.00 | Window Closed / Lapsed |