US3221883A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Filter press
Assignee: Reymersholms Gamla Ind AB
•
Filing: 1962-05-18
•
Granted: 1965-12-07
•
Expires: 1982-05-18
Abstract
No abstract record available.
Inventors
- 👤 Lennstrom Karl Valdemar
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 08:27
CPC Classifications
B; B01; B01D; B01D25/00; B01D25/12; B01D25/21; B01D25/215
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
49 words
A FILTER PRESS COMPRISING AN ASSEMBLY OF ALTERNATING JUXTAPOSED SUSPENSION SUPPLY FRAMES AND FILTER BOARDS, INLET MEANS FOR INTRODUCING SUSPENSION TO BE FILTERED INTO SAID SUSPENSION SUPPLY FRAMES AND OUTLETS FOR DISCHARGING LIQUID FROM THE INTERIORS OF SAID FILTER BOARDS, EACH OF SAID FILTER BOARDS COMPRISING A RECTANGULAR FILTER
Claim 2
Dependent Claim
49 words
A FILTER PRESS COMPRISING AN ASSEMBLY OF ALTERNATING JUXTAPOSED SUSPENSION SUPPLY FRAMES AND FILTER BOARDS, INLET MEANS FOR INTRODUCING SUSPENSION TO BE FILTERED INTO SAID SUSPENSION SUPPLY FRAMES AND OUTLETS FOR DISCHARGING LIQUID FROM THE INTERIORS OF SAID FILTER BOARDS, EACH OF SAID FILTER BOARDS COMPRISING A RECTANGULAR FILTER
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Cited
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Cited
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Cited
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Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-12-06 | 1969-06-07 | 1969-12-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-12-06 | 1973-06-07 | 1973-12-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-12-06 | 1977-06-07 | 1977-12-07 | $7700.00 | Window Closed / Lapsed |