US3504884A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pressure relieved valve
Assignee: MAS FAB MOKVELD NV
•
Filing: 1967-09-25
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Granted: 1970-04-07
•
Expires: 1987-09-25
Abstract
No abstract record available.
Inventors
- 👤 Nicolaas Jacobus Mokveld
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 19:15
CPC Classifications
F; F16; F16K; F16K3/00; F16K3/22; F16K3/24; F16K3/243; F16K1/00; F16K1/12; F16K1/32; F16K1/34; F16K1/36; F16K1/38
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2962039A
Cited
US3036587A
Cited
US3156445A
Cited
US3203246A
Cited
US3282558A
Cited
US3250510A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-04-06 | 1973-10-06 | 1974-04-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-04-06 | 1977-10-06 | 1978-04-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-04-06 | 1981-10-06 | 1982-04-07 | $7700.00 | Window Closed / Lapsed |