| http://www.w3.org/ns/prov#value | - Such a multi-circuit timer may be made in accordance with the teachings of such patents as U.S. Pat. No. 2,580,787, U.S. Pat. No. 1,172,080 and others known in the art operative for carrying out a predetermined program of operations by closing and opening one or more electrical circuits at predetermined times during a cycle of operations.
|
