US2884952A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Line hydraulic pressure relief valve
Assignee: AVCO Inc
•
Filing: 1953-03-23
•
Granted: 1959-05-05
•
Expires: 1973-03-23
Abstract
No abstract record available.
Inventors
- 👤 Mason Walker
- 👤 Stephen J Biello
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 10:03
CPC Classifications
F; F16; F16K; F16K17/00; F16K17/02; F16K17/04; F16K17/06; F16K17/0433; Y; Y10; Y10T; Y10T137/00; Y10T137/7722; Y10T137/7781; Y10T137/7837; Y10T137/7904; Y10T137/7922
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
DE36407C
Cited
GB139344A
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US2287840A
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US2303590A
Cited
US2351512A
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US2600875A
Cited
FR970737A
Cited
US2555334A
Cited
US2689583A
Cited
US2667893A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-05-04 | 1962-11-03 | 1963-05-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-05-04 | 1966-11-03 | 1967-05-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-05-04 | 1970-11-03 | 1971-05-05 | $7700.00 | Window Closed / Lapsed |