US2874899A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Discriminating plural counter assembly of fibers
Assignee: National Research Corp
•
Filing: 1955-03-07
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Granted: 1959-02-24
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Expires: 1975-03-07
Abstract
No abstract record available.
Inventors
- 👤 Jonathan R Roehrig
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 18:34
CPC Classifications
B; B65; B65H; B65H63/00; B65H63/06; B65H63/062; B65H63/065; B65H2701/00; B65H2701/30; B65H2701/31
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2470926A
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US2636983A
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US2646926A
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US2653231A
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US2679978A
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GB724209A
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US2784910A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-02-23 | 1962-08-25 | 1963-02-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-02-23 | 1966-08-25 | 1967-02-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-02-23 | 1970-08-25 | 1971-02-24 | $7700.00 | Window Closed / Lapsed |