US2701581A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Flow control valve
Assignee: ITT Bell and Gossett Inc
•
Filing: 1951-04-13
•
Granted: 1955-02-08
•
Expires: 1971-04-13
Abstract
No abstract record available.
Inventors
- 👤 Gilbert F Carlson
- 👤 Harold A Lockhart
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 11:26
CPC Classifications
F; F16; F16K; F16K15/00; F16K15/18; F16K15/182; F16K15/02; F16K15/06; F16K15/067; Y; Y10; Y10T; Y10T137/00; Y10T137/7722; Y10T137/7837; Y10T137/7876; Y10T137/7877; Y10T137/7904; Y10T137/7908; Y10T137/7909; Y10T137/7913; Y10T137/7915; Y10T137/7918
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US199814A
Cited
US345197A
Cited
US913491A
Cited
US963836A
Cited
US993742A
Cited
US1001111A
Cited
US1834276A
Cited
US2271274A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1958-02-07 | 1958-08-09 | 1959-02-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-02-07 | 1962-08-09 | 1963-02-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-02-07 | 1966-08-09 | 1967-02-08 | $7700.00 | Window Closed / Lapsed |