Patent US2873968A successfully refreshed from Google Patents.
US2873968A
Expired / Lapsed
US
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Hydraulically loaded feed rolls for corrugated paper stock
Assignee: Samuel M Langston Co
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Filing: 1957-04-08
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Granted: 1959-02-17
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Expires: 1977-04-08
Abstract
No abstract record available.
Inventors
- 👤 Grobman William
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 02:10
CPC Classifications
B; B65; B65H; B65H5/00; B65H5/06; B65H5/062; B65H2511/00; B65H2511/20; B65H2511/22; B65H2511/224
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US2267380A
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US2678465A
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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) | 1962-02-16 | 1962-08-18 | 1963-02-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-02-16 | 1966-08-18 | 1967-02-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-02-16 | 1970-08-18 | 1971-02-17 | $7700.00 | Window Closed / Lapsed |