US3054420A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Relief valves
Assignee: Commercial Shearing Inc
•
Filing: 1958-10-03
•
Granted: 1962-09-18
•
Expires: 1978-10-03
Abstract
No abstract record available.
Inventors
- 👤 Williams Arthur James
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 18:28
CPC Classifications
F; F16; F16K; F16K17/00; F16K17/02; F16K17/04; F16K17/0433; F16K17/0426; Y; Y10; Y10T; Y10T137/00; Y10T137/7722; Y10T137/7738; Y10T137/7781; Y10T137/7834; Y10T137/7837; Y10T137/785; Y10T137/7851
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
NL75802C
Cited
US254130A
Cited
GB548801A
Cited
US2568026A
Cited
GB633005A
Cited
US2524264A
Cited
US2591528A
Cited
US2655173A
Cited
US2839078A
Cited
US2917072A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-09-17 | 1966-03-19 | 1966-09-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-09-17 | 1970-03-19 | 1970-09-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-09-17 | 1974-03-19 | 1974-09-18 | $7700.00 | Window Closed / Lapsed |