US2982410A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Screening machine for granular materials
Assignee: Corning Glass Works
•
Filing: 1958-10-27
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Granted: 1961-05-02
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Expires: 1978-10-27
Abstract
No abstract record available.
Inventors
- 👤 Frederick E Barr
- 👤 Wendell S Blanding
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 00:56
CPC Classifications
B; B07; B07B; B07B1/00; B07B1/28; B07B1/38
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1962734A
Cited
FR775938A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-05-01 | 1964-10-31 | 1965-05-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-05-01 | 1968-10-31 | 1969-05-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-05-01 | 1972-10-31 | 1973-05-02 | $7700.00 | Window Closed / Lapsed |