US2415258A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hydraulic relief valve
Assignee: Parker Appliance Co
•
Filing: 1943-02-04
•
Granted: 1947-02-04
•
Expires: 1963-02-04
Abstract
No abstract record available.
Inventors
- 👤 Arthur L Parker
- 👤 Tirro Domenic A Di
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 00:09
CPC Classifications
F; F16; F16K; F16K17/00; F16K17/02; F16K17/04; F16K17/0406; F16K15/00; F16K15/02; F16K15/04; F16K15/044; F16K2200/00; F16K2200/30; F16K2200/303; Y; Y10; Y10T; Y10T137/00; Y10T137/7722; Y10T137/7837; Y10T137/7904; Y10T137/7922; Y10T137/7923; Y10T137/7927; Y10T137/7928
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US1120545A
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US1642724A
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GB344686A
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GB453489A
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US2342659A
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US2297076A
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US2351873A
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US2294568A
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US2312877A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1950-02-03 | 1950-08-05 | 1951-02-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1954-02-03 | 1954-08-05 | 1955-02-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1958-02-03 | 1958-08-05 | 1959-02-04 | $7700.00 | Window Closed / Lapsed |