US2862685A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Flow control valves
Assignee: Urquharts 1926 Ltd
•
Filing: 1951-06-11
•
Granted: 1958-12-02
•
Expires: 1971-06-11
Abstract
No abstract record available.
Inventors
- 👤 Lundberg Kurt Hugo Folke
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 19:22
CPC Classifications
F; F16; F16K; F16K1/00; F16K1/16; Y; Y10; Y10T; Y10T137/00; Y10T137/8158; Y10T137/8225; Y10T137/8275; Y10T137/8292; Y10T137/8309
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US799394A
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US824585A
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US1588315A
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US1931048A
Cited
FR796613A
Cited
US2174547A
Cited
US2554040A
Cited
GB597547A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-12-01 | 1962-06-02 | 1962-12-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-12-01 | 1966-06-02 | 1966-12-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-12-01 | 1970-06-02 | 1970-12-02 | $7700.00 | Window Closed / Lapsed |