Any individual, partnership, association, corporation, municipal corporation or state or any political subdivision thereof engaged in, or preparing to engage in, the manufacture, transportation or storage of any product to be used in the preparation of the United States or of any of the states for defense or for war or in the prosecution of war by the United States, or the manufacture, transportation, distribution or storage of gas, oil, coal, electricity or water, or any of said natural or artificial persons operating any public utility, whose property, except where it fronts on water or where there are entrances for railway cars, vehicles, persons or things, is surrounded by a fence or wall, or a fence or wall and buildings, may post around his or its property at each gate entrance, dock or railway entrance and every one hundred (100) feet of water front a sign reading 'No Entry Without Permission'. Whoever without permission of such owner shall willfully enter upon premises so posted shall be punished by imprisonment for not more than ten (10) days, or a fine of not more than Fifty Dollars ($50.00), or both. Laws 1941, p. 86, § 7.
Oklahoma Legal Code