Legal status (The legal status 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 status listed.)
Expired
Application number
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Siemens AG
Gebrueder Siemens and Co
Original Assignee
Siemens AG
Gebrueder Siemens and Co
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Application filed by Siemens AG, Gebrueder Siemens and CofiledCriticalSiemens AG
Application grantedgrantedCritical
Publication of GB190713071ApublicationCriticalpatent/GB190713071A/en
Investigating, Analyzing Materials By Fluorescence Or Luminescence
(AREA)
Abstract
13,071. Siemens A. Co., Gebr. June 8, 1906, [date applied for under Patents Act, 1901]. Search lights. - The negative electrode b for an arc is a carbon rod of smaller diameter than the positive electrode c, and is surrounded near the arc by a tube a of carbon or other conductive material, to retard its combustion and diminish its resistance. The rod can be rotated and moved axially in e tube.
GB190713071D1906-06-081907-06-05Improved Electrode for Search Lights.
ExpiredGB190713071A
(en)