US2798387A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for knurling printing rolls
Assignee: Monsanto Chemicals Ltd
•
Filing: 1953-06-25
•
Granted: 1957-07-09
•
Expires: 1973-06-25
Abstract
No abstract record available.
Inventors
- 👤 Chester L Woodworth
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 22:59
CPC Classifications
B; B23; B23P; B23P9/00; B23P9/02; Y; Y10; Y10T; Y10T82/00; Y10T82/30
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US767833A
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US960626A
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US1008701A
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US1772650A
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US1695617A
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US1918456A
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GB406163A
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US2598253A
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US2588006A
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US2638500A
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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) | 1960-07-08 | 1961-01-07 | 1961-07-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-07-08 | 1965-01-07 | 1965-07-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-07-08 | 1969-01-07 | 1969-07-09 | $7700.00 | Window Closed / Lapsed |