Patent US4948262A successfully refreshed from Google Patents.
Patent US3077924A successfully refreshed from Google Patents.
US3077924A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Paper making system
Assignee: Spruce Falls Power and Paper Co Ltd
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Filing: 1957-04-22
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Granted: 1963-02-19
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Expires: 1977-04-22
Abstract
No abstract record available.
Inventors
- 👤 George Garnet M Eastwood
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 22:44
CPC Classifications
D; D21; D21F; D21F1/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
99 words
IN A MACHINE FOR MAKING A WEB OF SHEET MATERIAL, A MOVABLY SUPPORTED WEB FORMING SCREEN, A SCREEN PIT INTO WHICH THE LIQUID DRAINING FROM A WEB FORMED ON SAID SCREEN MAY DRAIN, A FIRST MECHANISM FOR DRIVING SAID SCREEN, A HEAD BOX FOR SPOUTING A MIXTURE OF MAKEUP FURNISH AND SAID LIQUID ONTO SAID SCREEN IN THE DIRECTION OF SCREEN MOVEMENT, A SECOND MECHANISM FOR PUMPING SAID LIQUID TO SAID HEAD BOX FROM SAID PIT AND CONNECTED TO A SUPPLY OF MAKEUP FURNISH TO PROVIDE SAID MIXTURE IN THE HEAD BOX, A SENSING DEVICE SENSING CHANGES IN THE
Claim 2
Dependent Claim
99 words
IN A MACHINE FOR MAKING A WEB OF SHEET MATERIAL, A MOVABLY SUPPORTED WEB FORMING SCREEN, A SCREEN PIT INTO WHICH THE LIQUID DRAINING FROM A WEB FORMED ON SAID SCREEN MAY DRAIN, A FIRST MECHANISM FOR DRIVING SAID SCREEN, A HEAD BOX FOR SPOUTING A MIXTURE OF MAKEUP FURNISH AND SAID LIQUID ONTO SAID SCREEN IN THE DIRECTION OF SCREEN MOVEMENT, A SECOND MECHANISM FOR PUMPING SAID LIQUID TO SAID HEAD BOX FROM SAID PIT AND CONNECTED TO A SUPPLY OF MAKEUP FURNISH TO PROVIDE SAID MIXTURE IN THE HEAD BOX, A SENSING DEVICE SENSING CHANGES IN THE
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-02-18 | 1966-08-20 | 1967-02-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-02-18 | 1970-08-20 | 1971-02-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-02-18 | 1974-08-20 | 1975-02-19 | $7700.00 | Window Closed / Lapsed |