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Manufactured By:
Ashton Valve Co.
Boston, MA; Cambridge, MA

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Title: 1917 Ad-Ashton Valve Co., Pressure Gauge Tester
Source: Southern Engineer, V26, Feb 1917, pg. 108
Insert Date: 5/1/2020 2:12:52 PM

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1917 Ashton Valve Co., Pressure Gauge Tester
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