4075, 744075
Triple 3-input OR gates.

    +----------+             +---------------+
 1A |1  +--+ 14| VCC         | A | B | C | Y |   Y = A+B+C
 1B |2       13| 3A          |---+---+---+---|
 2A |3       12| 3B          | 0 | 0 | 0 | 0 |
 2B |4  4075 11| 3C          | 0 | 0 | 1 | 1 |
 2C |5       10| 3Y          | 0 | 1 | X | 1 |
 2Y |6        9| 1Y          | 1 | X | X | 1 |
GND |7        8| 1C          +---------------+
    +----------+

[This information is part of the GIICM]