Number | Date | Country | Kind |
---|---|---|---|
54-105747 | Aug 1979 | JPX |
Number | Name | Date | Kind |
---|---|---|---|
2832311 | Byrne | Apr 1958 | |
3983841 | Norton | Oct 1976 |
Entry |
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Research Disclosure; Dec. 1977; p. 57-58; No. 16448; "Apparatus for Transporting Powdered Materials", by Stewart Probst. |