File:Patent for a Hospital signaling system US1867134.pdf

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Original file (1,158 × 1,702 pixels, file size: 675 KB, MIME type: application/pdf, 6 pages)

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Patented July 12, 1932 1,867,134 UNITED STATES PATENT OFFICE BORNETT L. BOBROFF, OF MILWAUKEE, WISCONSIN HOSPITAL SIGNALING SYSTEM Application filed April 4, 1928. Serial No. 267,455.

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Description
English: Patented July 12, 1932 1,867,134

UNITED STATES PATENT OFFICE BORNETT L. BOBROFF, OF MILWAUKEE, WISCONSIN HOSPITAL SIGNALING SYSTEM

Application filed April 4, 1928. Serial No. 267,455.
Date
Source

Patented July 12, 1932 1,867,134 UNITED STATES PATENT OFFICE BORNETT L. BOBROFF, OF MILWAUKEE, WISCONSIN HOSPITAL SIGNALING SYSTEM Application filed April 4, 1928. Serial No. 267,455.

https://patentimages.storage.googleapis.com/2b/21/37/aa420d416b771f/US1867134.pdf
Author Bornett L. Bobroff (15 Sep 1882 - 27 Dec 1945)

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