Flynn & Frishauf
Counter provided with complementary field effect transistor inverters
 A binary counter provided with complementary field effect transistor inverters which includes at least three complementary field effect transistor inverters, at least two of which comprise clocked inverters acting upon receipt of clock signals having a complementary relationship. The three inverters are cascade connected with the output terminal of the last stage inverter connected to the input terminal of the first stage inverter, and the two clocked inverters are made to act alternately upon receipt of complementary clock signals, thereby enabling an output to be generated from the output side of one of the inverters with a frequency equal to half that of clock signals simultaneously supplied to both clocked inverters. 
Tokyo Shibaura Electric Co., Ltd.
H H H H H H
H03K H03K H03K H03K H03K H03K
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Yasoji
Suzuki