B - Operations – Transporting – 07 – B
Patent
B - Operations, Transporting
07
B
209/118
B07B 1/00 (2006.01) B07B 1/08 (2006.01) B07B 13/16 (2006.01)
Patent
CA 1179298
CASE 4321/CAN ABSTRACT OF THE INVENTION "SCREENING APPARATUS" The sizing screen comprises a plurality of rotatable screening decks mounted co-axially one below the other. The uppermost screening deck is rotated at a slower speed than the relative fast revolving lowermost screen deck.
390343
Armstrong Michael P.
Gilliver Stanley
O'brian Rodney W.
Coal Industry (patents) Limited
Fetherstonhaugh & Co.
LandOfFree
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