Patent US3247966A successfully refreshed from Google Patents.
US3247966A
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Assignee: Lukens General Industries Inc
•
Filing: 1964-01-17
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Granted: 1966-04-26
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Expires: 1984-01-17
Abstract
No abstract record available.
Inventors
- 👤 Jr James J Harmon
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 23:27
CPC Classifications
B; B07; B07B; B07B1/00; B07B1/28; B07B1/30
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
62 words
IN COMBINATION, A SCREEN COMPRISING SPACED TRANSVERSELY DISPOSED SUPPORTING MEMBERS, EACH SUPPORTING MEMBER COMPRISING A ROD AND A SHEATH OF RESILIENT MATERIAL, SAID SHEATH BEING OF A CROSS SECTION TO PROVIDE A MASS OF SUBSTANTIAL DEPTH AT LEAST ONE SIDE OF THE ROD, AND SPACED LONGITUDINALLY DISPOSED MEMBERS EXTENDING THROUGH SAID MASS OF RESILIENT MATERIAL OF SUBSTANTIAL DEPTH IN FIRM RELATION THEREWITH.
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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) | 1969-04-25 | 1969-10-25 | 1970-04-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-04-25 | 1973-10-25 | 1974-04-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-04-25 | 1977-10-25 | 1978-04-26 | $7700.00 | Window Closed / Lapsed |