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Manufactured By:
E. H. Bellows; Bellows & Whitcomb
Worcester, MA

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Title: 1868 Ad-E. H. Bellows, Balanced Slide Valve
Source: Worcester City Directory, 1868, pg. 9
Insert Date: 6/19/2022 9:47:37 PM

Image Description:
12 Nov., 1856 is not a valid patent date.

The Balance Slide Valve was actually patented on 12 Nov., 1867, patent #70,784.

https://datamp.org/patents/displayPatent.php?number=70784&typeCode=0
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1868 E. H. Bellows, Balanced Slide Valve
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