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William Law Pakenham
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H01K3/00—Apparatus or processes adapted to the manufacture, installing, removal, or maintenance of incandescent lamps or parts thereof
H01K3/02—Manufacture of incandescent bodies
Abstract
24,361. Pakenham, W. L. Oct. 24. Residual gases.-Phospham is placed in lamps having drawn metal filaments, alone or with red phosphorus, to prevent blackening during exhaustion and subsequent use. The material is made into a paste with alcohol and applied to the lamp-stems. Specification 21,654/06 is referred to.
GB191224361D1912-10-241912-10-24Improvements in or relating to the Manufacture of Metal Filament Electric Lamps.
ExpiredGB191224361A
(en)