US2500965A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Vertical axis gyratory screen
Assignee: Nordberg Manufacturing Co
•
Filing: 1944-06-05
•
Granted: 1950-03-21
•
Expires: 1964-06-05
Abstract
No abstract record available.
Inventors
- 👤 Loren G Symons
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 07:50
CPC Classifications
B; B07; B07B; B07B1/00; B07B1/18; B07B1/22; Y; Y10; Y10T; Y10T74/00; Y10T74/18; Y10T74/18544; Y10T74/18552
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US400620A
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US440634A
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US521209A
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US549365A
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US901519A
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US1222903A
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FR563239A
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US1455907A
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GB437751A
Cited
US2204835A
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US2416499A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-03-20 | 1953-09-19 | 1954-03-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-03-20 | 1957-09-19 | 1958-03-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-03-20 | 1961-09-19 | 1962-03-21 | $7700.00 | Window Closed / Lapsed |