USX4371I1 - Gauge, sight for boilers - Google Patents

Gauge, sight for boilers Download PDF

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Publication number
USX4371I1
USX4371I1 US X4371 I1 USX4371 I1 US X4371I1
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US
United States
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boilers
sight
gauge
united states
barker
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12 United States Patent 10 Patent N0.: X4371 Barker (45) Date of Patent: Mar. 24, 1826 (54) GAUGE, SIGHT FOR BOILERS (76) Inventor: William Barker United States Patent Patent N0.: X4371

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