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Ehrich und Graetz AG
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Ehrich und Graetz AG
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Publication of GB190802973ApublicationCriticalpatent/GB190802973A/en
Investigating Materials By The Use Of Optical Means Adapted For Particular Applications
(AREA)
Abstract
2973. Ehrich & Graetz. Feb. 26, 1907, [date applied for under Section 91 of Patents &c. Act, 1907]. Incandescent gas and vapour lamps.-Each burner b of an inverted lamp of the cluster-burner type is provided with a separate lateral air-supply tube f having a separate air-regulator h, and the burners are provided with a common flue. When two burners are employed, they are connected by a stiffening-piece g. The Specification in the original form, as open to inspection under Section 91 (3) (a), comprises also a single-burner lamp having a single lateral air-supply tube provided with a regulating- device ; this subject-matter does not appear in the Complete Specification as accepted.
GB190802973D1907-02-261908-02-10Improvements in and relating to Inverted Incandescent Pressure Gas Lamps.
ExpiredGB190802973A
(en)