Power Pentode Valve UL41 - Physics Museum - The University of Queensland, Australia
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Philips UL41 Tubes for sale NOS NIB Coinbased silvertip Audio Output pentode | eBay
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Ul41 Valve NOS Philips Italy Tube Valve Röhre cv1977 45a5 Final Audio Radio | eBay
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TDSL Tube data [UL41]
UL41 @ The Valve Museum
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UL41 @ The Valve Museum
1 X Mullard UL41 / N142 valve / tube. British made. | #162803204
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UL41 @ The Valve Museum
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UL 41, Tube UL41; Röhre UL 41 ID770, Vacuum Pentode
