US2776800A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Air flow plate grinders
Assignee: Cascades Plywood Corp
•
Filing: 1952-06-27
•
Granted: 1957-01-08
•
Expires: 1972-06-27
Abstract
No abstract record available.
Inventors
- 👤 Uschmann Curt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 22:20
CPC Classifications
B; B02; B02C; B02C7/00; B02C7/02; B02C7/08
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1424615A
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US1160964A
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US1762122A
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GB331567A
Cited
US1782372A
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US2035994A
Cited
US2044480A
Cited
US2156321A
Cited
US2343757A
Cited
US2572373A
Cited
US2580579A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-01-08 | 1960-07-09 | 1961-01-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-01-08 | 1964-07-09 | 1965-01-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-01-08 | 1968-07-09 | 1969-01-08 | $7700.00 | Window Closed / Lapsed |