Patent US2687869A successfully refreshed from Google Patents.
US2687869A
Expired / Lapsed
US
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Flow restrictor valve
Assignee: Borg Warner Corp
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Filing: 1950-04-06
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Granted: 1954-08-31
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Expires: 1970-04-06
Abstract
No abstract record available.
Inventors
- 👤 John A Kanuch
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 12:15
CPC Classifications
F; F15; F15B; F15B13/00; F15B13/02; Y; Y10; Y10T; Y10T137/00; Y10T137/7722; Y10T137/7781; Y10T137/7784; Y10T137/7787; Y10T137/7788; Y10T137/8593; Y10T137/87265; Y10T137/87507; Y10T137/87539
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1074379A
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US1494708A
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US1793252A
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US2037540A
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US2107673A
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US2167399A
Cited
US2472787A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-08-30 | 1958-03-01 | 1958-08-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-08-30 | 1962-03-01 | 1962-08-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-08-30 | 1966-03-01 | 1966-08-31 | $7700.00 | Window Closed / Lapsed |