US2966215A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Vessel for treatment of fragmentary material
Assignee: Individual
•
Filing: 1957-05-01
•
Granted: 1960-12-27
•
Expires: 1977-05-01
Abstract
No abstract record available.
Inventors
- 👤 Clarence L Durkee
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 01:45
CPC Classifications
D; D21; D21C; D21C7/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US203887A
Cited
US1160523A
Cited
US1297569A
Cited
US1353336A
Cited
US1954508A
Cited
US2080946A
Cited
US2235992A
Cited
US2335611A
Cited
US2425335A
Cited
US2488671A
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 |