The “Pat. Dec. 09 / Made in U.S.A. / PA." inscription on the metal cap of this glass bottle refers to a patent issued to Christian H. Werner (1867-1948), an immigrant from Denmark who established the American Metal Cap Co. in Brooklyn.
Ref: Christian H. Werner, “Sheet-Metal Cap,” U.S. Patent 975,914 (Nov. 15, 1910).
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