US2787422A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Jet grinding apparatus
Assignee: BASF SE
•
Filing: 1953-07-28
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Granted: 1957-04-02
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Expires: 1973-07-28
Abstract
No abstract record available.
Inventors
- 👤 Woellhaf Josef
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 06:27
CPC Classifications
B; B02; B02C; B02C19/00; B02C19/06; B02C19/061; B02C19/0012; B02C19/005
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-04-01 | 1960-10-01 | 1961-04-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-04-01 | 1964-10-01 | 1965-04-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-04-01 | 1968-10-01 | 1969-04-02 | $7700.00 | Window Closed / Lapsed |