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.)
Morgan Advanced Materials PLC
Original Assignee
Morgan Crucible Co PLC
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Filing date
Publication date
Application filed by Morgan Crucible Co PLCfiledCriticalMorgan Crucible Co PLC
Application grantedgrantedCritical
Publication of GB190401695ApublicationCriticalpatent/GB190401695A/en
1695. Morgan Crucible Co., and Fox, J. C. Jan. 22. Cupels are hollowed or recessed on the underside of the base, so that litharge will diffuse itself through the cupel rather than pass into the floor of the muffle.
GB190401695D1904-01-221904-01-22Improvements in the Manufacture of Cupels.
ExpiredGB190401695A
(en)
Arc lamp with converging, downwardly directed electrodes and with a closed iron ring, which serves to produce one or more scattering fields symmetrically located in relation to the arc.