US2470530A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Grinding block arrangement
Assignee: Individual
•
Filing: 1946-05-28
•
Granted: 1949-05-17
•
Expires: 1966-05-28
Abstract
No abstract record available.
Inventors
- 👤 Joseph M Stryhal
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 12:11
CPC Classifications
B; B24; B24B; B24B41/00; B24B41/06; B24B41/066
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US678712A
Cited
US1189667A
Cited
US1093554A
Cited
US1689022A
Cited
US2061718A
Cited
US2343088A
Cited
US2365436A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-05-16 | 1952-11-15 | 1953-05-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-05-16 | 1956-11-15 | 1957-05-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-05-16 | 1960-11-15 | 1961-05-17 | $7700.00 | Window Closed / Lapsed |