US3035604A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Relief valve
Assignee: Midland Manufacturing Corp
•
Filing: 1959-06-15
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Granted: 1962-05-22
•
Expires: 1979-06-15
Abstract
No abstract record available.
Inventors
- 👤 Ralph G Portis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 17:17
CPC Classifications
F; F16; F16K; F16K17/00; F16K17/02; F16K17/04; F16K17/0433; F16K15/00; F16K15/02; F16K15/06; F16K15/063; F16K17/0426; F16K17/0466; Y; Y10; Y10T; Y10T137/00; Y10T137/598; Y10T137/6154; Y10T137/7722; Y10T137/7837; Y10T137/7904; Y10T137/7922; Y10T137/7929; Y10T137/7931; Y10T137/7939
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-05-21 | 1965-11-20 | 1966-05-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-05-21 | 1969-11-20 | 1970-05-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-05-21 | 1973-11-20 | 1974-05-22 | $7700.00 | Window Closed / Lapsed |