Patent US2790501A successfully refreshed from Google Patents.
US2790501A
Expired / Lapsed
US
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Well flow control apparatus and system
Assignee: US Industries Inc
•
Filing: 1953-08-14
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Granted: 1957-04-30
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Expires: 1973-08-14
Abstract
No abstract record available.
Inventors
- 👤 Henry U Garrett
- 👤 Clifford M Peters
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 06:39
CPC Classifications
E; E21; E21B; E21B34/00; E21B34/06; E21B34/14
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2230107A
Cited
US2431751A
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US2380022A
Cited
US2508285A
Cited
US2667926A
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US2620741A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-04-29 | 1960-10-29 | 1961-04-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-04-29 | 1964-10-29 | 1965-04-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-04-29 | 1968-10-29 | 1969-04-30 | $7700.00 | Window Closed / Lapsed |