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
Inventor
Josef Schwab
Leopold Vogel
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.)
Individual
Original Assignee
Individual
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.)
Filing date
Publication date
Application filed by IndividualfiledCriticalIndividual
Application grantedgrantedCritical
Publication of GB190400628ApublicationCriticalpatent/GB190400628A/en
Non-Portable Lighting Devices Or Systems Thereof
(AREA)
Abstract
628. Schwab, J., and Vogel, L. Jan. 9. Incandescent lamps.- To permit of renewal, the filament b is mounted on long supporting wires d, in a bulb of spherical form with a neck f which is cemented or screwed to the cap a. The filament is formed into three or four turns to get the necessary length. In unsealing, the point h is first fused, and a small glass tube is attached before opening the neck. The parts are separated and re-united by means of the blowpipe.
GB190400628D1904-01-091904-01-09Improvements relating to Electric Incandescent Lamps
ExpiredGB190400628A
(en)