Author Topic: GE Form 109 Dates ??  (Read 3287 times)
wide-lite 1000
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GE Form 109 Dates ?? « on: June 14, 2020, 12:10:28 PM » Author: wide-lite 1000
Does anyone know how to determine a rough date of manufacture of a form 109 ??? I've noticed variations on design of the slipfitter , the number of ribs stamped into the reflector and either vertical or horizontal socket orientation.

 Any Ideas ???
« Last Edit: August 23, 2020, 09:58:50 PM by wide-lite 1000 » Logged

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Silverliner
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Rare white reflector


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Re: GE Form 109 Dates ?? « Reply #1 on: November 17, 2020, 07:37:09 PM » Author: Silverliner
I'm not exactly an expert. Joe Maurath should know. One thing I know, earlier models didn't have ribs in the metal reflector, later versions did. And there was more than one design of ribs, depending on light distribution type.
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Re: GE Form 109 Dates ?? « Reply #2 on: November 18, 2020, 12:18:27 AM » Author: wide-lite 1000
Thank you !
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