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US2726768A
Expired / Lapsed
US
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Classification of solids
Assignee: Individual
•
Filing: 1951-08-14
•
Granted: 1955-12-13
•
Expires: 1971-08-14
Abstract
No abstract record available.
Inventors
- 👤 Rakowsky Victor
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 22:08
CPC Classifications
B; B04; B04C; B04C3/00; B04C3/06
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1197946A
Cited
GB191314428A
Cited
US1470531A
Cited
US1825157A
Cited
US2387866A
Cited
US2429436A
Cited
US2538870A
Cited
DE804189C
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1958-12-12 | 1959-06-13 | 1959-12-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-12-12 | 1963-06-13 | 1963-12-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-12-12 | 1967-06-13 | 1967-12-13 | $7700.00 | Window Closed / Lapsed |