Patent US3236724A successfully refreshed from Google Patents.
US3236724A
Expired / Lapsed
US
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Apparatus for making formed fibrous webs
Assignee: Metso Fiber Karlstad AB
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Filing: 1962-11-23
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Granted: 1966-02-22
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Expires: 1982-11-23
Abstract
No abstract record available.
Inventors
- 👤 Wahlstrom Per Borje
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 22:08
CPC Classifications
D; D21; D21F; D21F9/00; D21F9/003
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
55 words
APPARATUS FOR FORMING A WEB OF FIBROUS MATERIAL COMPRISING, A ROTATABLE FLUID PERMEABLE DRUM, AN ENDLESS FLUID PERMEABLE WEB EXTENDING ABOUT A PORTION OF THE PERIMETER OF SAID DRUM AND IN CONTACT THEREWITH, AN ENDLESS FINE MESH SCREEN BELT EXTENDING ABOUT A PART OF SAID PORTION OF THE DRUM PERIMETER, AND A SECOND HEAVY SCREEN
References Cited (Backward Citations)
CA614901A
Cited
GB316224A
Cited
US1875075A
Cited
US2174744A
Cited
US2581210A
Cited
US3056719A
Cited
US3057402A
Cited
US2995186A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-02-21 | 1969-08-23 | 1970-02-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-02-21 | 1973-08-23 | 1974-02-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-02-21 | 1977-08-23 | 1978-02-22 | $7700.00 | Window Closed / Lapsed |