3" X 4 5/8" (76mm X 117mm)
(ear embossed) PAT DEC 25 1917 OTHER PATS PENDING
Picture courtesy Bob Berry |
U-186: USA
3" X 4 5/8" (76mm X 117mm)
(ear embossed) PAT DEC 25 1917 OTHER PATS PENDING
Picture courtesy Bob Berry |
U number assignment by Jack Tod. Purkey's Patent 1,251,416 Dec. 25, 1917
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