US3916780A - - Google Patents
i United States Patent Heiser Nov. 4, 1975 2,619,150 11/1952 Smith 100/49 [76] Inventor: Warren R. Heiser, 934 N. Mildred, Dearbmm Mlch- 48128 3,817,169 6/1974 Bischofi' 100/216 x [22] Filed: Mar. 12, 1974 Primary Examiner-Billy J. Wilhite [21] Appl' 450422 Attorney, Agent, or Firm-Hanke, Patalidis & Dumont [52] US. Cl. 100/49; 74/50; [57] ABSTRACT 51 Im. cl. B30B 15/30 An ...