Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Publication of BE549687ApublicationCriticalpatent/BE549687A/xx
H01K1/42—Means forming part of the lamp for the purpose of providing electrical connection, or support for, the lamp
H01K1/44—Means forming part of the lamp for the purpose of providing electrical connection, or support for, the lamp directly applied to, or forming part of, the vessel