US2966267A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for materials classification
Assignee: Individual
•
Filing: 1958-08-21
•
Granted: 1960-12-27
•
Expires: 1978-08-21
Abstract
No abstract record available.
Inventors
- 👤 James R Dunbar
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 10:23
CPC Classifications
B; B07; B07B; B07B1/00; B07B1/12; B07B1/14; B07B1/15; D; D21; D21D; D21D5/00; D21D5/02; D21D5/06
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US292656A
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US626028A
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US667535A
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US1261054A
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US1557877A
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US1639797A
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US1699718A
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US1766340A
Cited
GB376273A
Cited
US2417921A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-12-27 | 1964-06-27 | 1964-12-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-12-27 | 1968-06-27 | 1968-12-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-12-27 | 1972-06-27 | 1972-12-27 | $7700.00 | Window Closed / Lapsed |