US3295684A
Expired / Lapsed
US
⏱️ 0.0 years remaining
High pressure filter
Assignee: Individual
•
Filing: 1963-02-28
•
Granted: 1967-01-03
•
Expires: 1983-02-28
Abstract
No abstract record available.
Inventors
- 👤 James E Webb
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 06:41
CPC Classifications
B; B01; B01D; B01D29/00; B01D29/01; B01D29/05
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
83 words
A HIGH PRESSURE FILTER, COMPRISING: (A) A HOUSING INCLUDING A CENTRAL BORE HAVING A CONSTRICTED OUTLET PORT FORMING A SUPPORTING SHOULDER; (B) AN INLET FITTING SCREW-THREADED IN SAID BORE AND HAVING A CONICAL TIP AND DOWNWARDLY DIVERGING INLET PORTS SURROUNDING SAID TIP; (C) AN AXIALLY PERFORATED SUPPORT MEMBER BEARING AGAINST SAID SHOULDER; (D) A LOAD-DISTRIBUTING SCREEN OVERLYING SAID PERFORATIONS; (E) A PERFORATED PLATE OVERLYING SAID SCREEN; (F) A PERFORATED PLATE OVERLYING SAID SCREEN; (G) A PRELIMINARY FILTER ELEMENT OVERLYING SAID FINAL FILTER SHEET;
References Cited (Backward Citations)
US593573A
Cited
US639471A
Cited
FR883301A
Cited
US2381627A
Cited
US2798718A
Cited
US2793016A
Cited
US3206216A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-01-02 | 1970-07-04 | 1971-01-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-01-02 | 1974-07-04 | 1975-01-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-01-02 | 1978-07-04 | 1979-01-03 | $7700.00 | Window Closed / Lapsed |