GB8326980D0 - Reducing end darkening in fluorescent lamps - Google Patents

Reducing end darkening in fluorescent lamps

Info

Publication number
GB8326980D0
GB8326980D0 GB838326980A GB8326980A GB8326980D0 GB 8326980 D0 GB8326980 D0 GB 8326980D0 GB 838326980 A GB838326980 A GB 838326980A GB 8326980 A GB8326980 A GB 8326980A GB 8326980 D0 GB8326980 D0 GB 8326980D0
Authority
GB
United Kingdom
Prior art keywords
fluorescent lamps
reducing end
darkening
end darkening
reducing
Prior art date
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.)
Pending
Application number
GB838326980A
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.)
Thorn EMI PLC
Original Assignee
Thorn EMI PLC
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 Thorn EMI PLC filed Critical Thorn EMI PLC
Priority to GB838326980A priority Critical patent/GB8326980D0/en
Publication of GB8326980D0 publication Critical patent/GB8326980D0/en
Priority to GB08423967A priority patent/GB2147735B/en
Priority to DE19848427957 priority patent/DE8427957U1/en
Pending legal-status Critical Current

Links

GB838326980A 1983-10-08 1983-10-08 Reducing end darkening in fluorescent lamps Pending GB8326980D0 (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
GB838326980A GB8326980D0 (en) 1983-10-08 1983-10-08 Reducing end darkening in fluorescent lamps
GB08423967A GB2147735B (en) 1983-10-08 1984-09-21 Fluorescent lamps
DE19848427957 DE8427957U1 (en) 1983-10-08 1984-09-22 LOW PRESSURE DISCHARGE LAMP

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB838326980A GB8326980D0 (en) 1983-10-08 1983-10-08 Reducing end darkening in fluorescent lamps

Publications (1)

Publication Number Publication Date
GB8326980D0 true GB8326980D0 (en) 1983-11-09

Family

ID=10549899

Family Applications (2)

Application Number Title Priority Date Filing Date
GB838326980A Pending GB8326980D0 (en) 1983-10-08 1983-10-08 Reducing end darkening in fluorescent lamps
GB08423967A Expired GB2147735B (en) 1983-10-08 1984-09-21 Fluorescent lamps

Family Applications After (1)

Application Number Title Priority Date Filing Date
GB08423967A Expired GB2147735B (en) 1983-10-08 1984-09-21 Fluorescent lamps

Country Status (2)

Country Link
DE (1) DE8427957U1 (en)
GB (2) GB8326980D0 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1393346A2 (en) * 2001-05-08 2004-03-03 Koninklijke Philips Electronics N.V. Low-pressure mercury vapour discharge lamp
US6614146B2 (en) * 2001-09-24 2003-09-02 Osram Sylvania Inc. Electrode shield for fluorescent lamp having a pair of spaced apart shield plates

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL59720C (en) * 1942-06-16
GB692693A (en) * 1948-01-02 1953-06-10 Philips Nv Improvements in or relating to vapour discharge lamps
US3121184A (en) * 1960-12-30 1964-02-11 Gen Electric Discharge lamp with cathode shields
US3525009A (en) * 1968-02-05 1970-08-18 Tokyo Shibaura Electric Co Low pressure mercury vapour discharge lamp including an alloy type getter coating
US4013914A (en) * 1975-11-26 1977-03-22 North American Philips Corporation electrode protecting means for electric discharge lamps
GB1589473A (en) * 1977-07-11 1981-05-13 Thorn Emi Ltd Fluorescent lamps

Also Published As

Publication number Publication date
GB8423967D0 (en) 1984-10-31
DE8427957U1 (en) 1985-01-03
GB2147735B (en) 1987-02-04
GB2147735A (en) 1985-05-15

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