Number | Name | Date | Kind |
---|---|---|---|
1049992 | Catchings | Jan 1913 | |
4163456 | Herron | Aug 1979 |
Entry |
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Brochure entitled Air and Vacuum Relief Valves, distrubuted by Rain Bird Sales, Inc. (4 pgs.). |
Brochure-Waterman Industries, Inc. relating to "Red Top Air Vents and Vacuum Relief Valves" and "Ag Vent Ball Air and Vacuum Valves-Models 200, 300, 400" (4 pgs.). |
Brochure-Bermad, disclosing model number 4405, 4420, and 4415, Air and Vacuum Relief Valves (4 pgs.). |