Patent US2481174A successfully refreshed from Google Patents.
US2481174A
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Variable unbalanced weight mechanism for mechanical vibrating screens and the like
Assignee: Jeffrey Manufacturing Co
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Filing: 1949-01-03
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Granted: 1949-09-06
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Expires: 1969-01-03
Abstract
No abstract record available.
Inventors
- 👤 Orval R Strawn
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 17:34
CPC Classifications
B; B07; B07B; B07B1/00; B07B1/42; B07B1/44; B06; B06B; B06B1/00; B06B1/10; B06B1/16; B06B1/161; B06B1/162; B06B1/164; Y; Y10; Y10T; Y10T74/00; Y10T74/18; Y10T74/18544; Y10T74/18552
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-09-05 | 1953-03-07 | 1953-09-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-09-05 | 1957-03-07 | 1957-09-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-09-05 | 1961-03-07 | 1961-09-06 | $7700.00 | Window Closed / Lapsed |