Patent US3429437A successfully refreshed from Google Patents.
US3429437A
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US
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Method for sorting bulk goods
Assignee: Rheinische Kalksteinwerke GmbH
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Filing: 1967-07-06
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Granted: 1969-02-25
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Expires: 1987-07-06
Abstract
No abstract record available.
Inventors
- 👤 Adolf Terschanski
- 👤 Wigand Lunau
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 23:36
CPC Classifications
B; B65; B65G; B65G47/00; B65G47/34; B65G47/46; B65G47/48; B65G47/49; B65G47/493; G; G01; G01N; G01N21/00; G01N21/84; G01N21/88; Y; Y10; Y10S; Y10S209/00; Y10S209/939
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US3230305A
Cited
US3389789A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-02-25 | 1972-08-26 | 1973-02-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-02-25 | 1976-08-26 | 1977-02-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-02-25 | 1980-08-26 | 1981-02-25 | $7700.00 | Window Closed / Lapsed |