Patent US2720214A successfully refreshed from Google Patents.
US2720214A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Relief valve manifold
Assignee: Bastian Blessing Co
•
Filing: 1953-02-19
•
Granted: 1955-10-11
•
Expires: 1973-02-19
Abstract
No abstract record available.
Inventors
- 👤 Earl V Rupp
- 👤 Harry N Shaw
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 13:22
CPC Classifications
F; F16; F16K; F16K35/00; F16K35/14; Y; Y10; Y10T; Y10T137/00; Y10T137/598; Y10T137/599; Y10T137/6031; Y10T137/8593; Y10T137/86911; Y10T137/877; Y10T137/87788; Y10T137/87812
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
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) | 1958-10-10 | 1959-04-11 | 1959-10-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-10-10 | 1963-04-11 | 1963-10-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-10-10 | 1967-04-11 | 1967-10-11 | $7700.00 | Window Closed / Lapsed |