Image Title:
Philip B. Downing Letter Box patent and photo of USPS box
Note:
"During the late nineteenth and the early twentieth century, Philip Bell Downing successfully filed at least five patents with the United States Patent Office. Among his most significant inventions were a street letter box (U.S. Patent numbers 462,092 and 462,093) . . ." [Blackpast.org] Read More
Note 2: To view Downing's US Patent Click Here
Photo by:
Petr Kratochvil
Source:
Mahoney, E. “Philip B. Downing (1857-1934),” Blackpast.org.
Subject:
Post - Mail - Post Office - Mailbox - Inventor - Philip Bell Downing - Inventor - Patent
Date:
N\A
Rights:
Public Domain
Image:
SA-Mail-13
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