US2993505A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Relief valve
Assignee: Electraulic Presses Ltd
•
Filing: 1954-05-17
•
Granted: 1961-07-25
•
Expires: 1974-05-17
Abstract
No abstract record available.
Inventors
- 👤 Towler Frank Hathorn
- 👤 Towler John Maurice
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 08:06
CPC Classifications
F; F15; F15B; F15B11/00; F15B11/02; F16; F16K; F16K17/00; F16K17/02; F16K17/04; F16K17/10; F16K17/105; F15B2211/00; F15B2211/20; F15B2211/205; F15B2211/2053; F15B2211/20538; F15B2211/30; F15B2211/305; F15B2211/30525; F15B2211/31; F15B2211/3105; F15B2211/3111; F15B2211/32; F15B2211/321; F15B2211/324; F15B2211/50; F15B2211/505; F15B2211/50509; F15B2211/50536; F15B2211/515; F15B2211/5151; F15B2211/52; F15B2211/528; F15B2211/55; F15B2211/60; F15B2211/625; F15B2211/635; F15B2211/6355; F15B2211/70; F15B2211/705; F15B2211/7051; F15B2211/7053; F15B2211/76; Y; Y10; Y10T; Y10T137/00; Y10T137/2496; Y10T137/2559; Y10T137/2574; Y10T137/2605; Y10T137/2607; Y10T137/7722; Y10T137/7758; Y10T137/7762; Y10T137/7769; Y10T137/7837; Y10T137/785; Y10T137/7852; Y10T137/7853
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US2404102A
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US2500555A
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US2639725A
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US2545573A
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US2617389A
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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) | 1964-07-24 | 1965-01-23 | 1965-07-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-07-24 | 1969-01-23 | 1969-07-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-07-24 | 1973-01-23 | 1973-07-25 | $7700.00 | Window Closed / Lapsed |