0000891547-97-000104 SC 13G/A 1 19971201 NASD CHEMPOWER INC 0000847595 4955 341481970 OH 1231 SC 13G/A 34 005-40723 97730524 807 E TURKEYFOOT LAKE RD AKRON OH 44319 2168964202 807 EAST TURKEYFOOT LAKE ROAD AKRON OH 44319 RYBACK MANAGEMENT CORP /MO /ADV 0000891547 431615580 MI 1231 SC 13G/A 7711 CARONDELET AVE STE 700 ST LOUIS MO 63105 3147275305 7711 CARONDELET STE 700 ST LOUIS MO 63105 RYBACK MANAGEMENT CORP /MO/ /ADV 19940822 SC 13G/A 1 000089154797000104-001-seq1-sc-13g-a.txt