United States Trademark No. 45,057, registered August 1, 1905 Serial Number 71,000,669 expired January 1, 1986
Author
registered by Ernest J. Knabe, Jr., president; Wm. Knabe & Co., Manufacturing Company of Baltimore City, Pianofortes.
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Public domainPublic domainfalsefalse
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{{Information |Description=Wm. Knabe & Co. shield logo |Source=United States Trademark No. 45,057, registered August 1, 1905 Serial Number 71,000,669 expired January 1, 1986 |Date=first used in commerce March 1904 |Author=registered by Ernest J. Knabe, Jr