US3410519A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Relief valve
Assignee: Caterpillar Inc
•
Filing: 1966-01-24
•
Granted: 1968-11-12
•
Expires: 1986-01-24
Abstract
No abstract record available.
Inventors
- 👤 Duane E Evans
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 10:04
CPC Classifications
F; F16; F16K; F16K31/00; F16K31/02; F16K31/06; F16K31/0644; F16K31/0655; F16K31/0658; F16K17/00; F16K17/02; F16K17/04; F16K17/0493; F16K31/0651
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2263819A
Cited
US2543455A
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CH264710A
Cited
GB762876A
Cited
US2860850A
Cited
US3001757A
Cited
US3134932A
Cited
US3133234A
Cited
US3134542A
Cited
US3178151A
Cited
US3321177A
Cited
US3355145A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-11-12 | 1972-05-13 | 1972-11-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-11-12 | 1976-05-13 | 1976-11-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-11-12 | 1980-05-13 | 1980-11-12 | $7700.00 | Window Closed / Lapsed |