US3023903A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Heavy media process and apparatus
Assignee: Nortons-Tividale Ltd
•
Filing: 1959-12-01
•
Granted: 1962-03-06
•
Expires: 1979-12-01
Abstract
No abstract record available.
Inventors
- 👤 Norton Ronald Mervyn
- 👤 Walt Petrus J Van Der
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 02:51
CPC Classifications
B; B03; B03B; B03B5/00; B03B5/28; B03B5/30; B03B5/36; B03B5/38
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US2783887A
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US1937190A
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US1895504A
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US1966609A
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DE727441C
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US2777577A
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US2843265A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-03-05 | 1965-09-04 | 1966-03-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-03-05 | 1969-09-04 | 1970-03-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-03-05 | 1973-09-04 | 1974-03-06 | $7700.00 | Window Closed / Lapsed |