GB8825759D0 - Improvements in plant growth lamps - Google Patents

Improvements in plant growth lamps

Info

Publication number
GB8825759D0
GB8825759D0 GB888825759A GB8825759A GB8825759D0 GB 8825759 D0 GB8825759 D0 GB 8825759D0 GB 888825759 A GB888825759 A GB 888825759A GB 8825759 A GB8825759 A GB 8825759A GB 8825759 D0 GB8825759 D0 GB 8825759D0
Authority
GB
United Kingdom
Prior art keywords
plant growth
growth lamps
lamps
plant
growth
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.)
Granted
Application number
GB888825759A
Other versions
GB2211985B (en
GB2211985A (en
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
Publication of GB8825759D0 publication Critical patent/GB8825759D0/en
Publication of GB2211985A publication Critical patent/GB2211985A/en
Application granted granted Critical
Publication of GB2211985B publication Critical patent/GB2211985B/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J61/00—Gas-discharge or vapour-discharge lamps
    • H01J61/02—Details
    • H01J61/12—Selection of substances for gas fillings; Specified operating pressure or temperature
    • H01J61/18—Selection of substances for gas fillings; Specified operating pressure or temperature having a metallic vapour as the principal constituent
    • H01J61/20—Selection of substances for gas fillings; Specified operating pressure or temperature having a metallic vapour as the principal constituent mercury vapour
GB8825759A 1987-11-05 1988-11-03 Improvements in plant growth lamps Expired - Lifetime GB2211985B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB878725913A GB8725913D0 (en) 1987-11-05 1987-11-05 Plant growth lamps

Publications (3)

Publication Number Publication Date
GB8825759D0 true GB8825759D0 (en) 1988-12-07
GB2211985A GB2211985A (en) 1989-07-12
GB2211985B GB2211985B (en) 1992-05-27

Family

ID=10626476

Family Applications (2)

Application Number Title Priority Date Filing Date
GB878725913A Pending GB8725913D0 (en) 1987-11-05 1987-11-05 Plant growth lamps
GB8825759A Expired - Lifetime GB2211985B (en) 1987-11-05 1988-11-03 Improvements in plant growth lamps

Family Applications Before (1)

Application Number Title Priority Date Filing Date
GB878725913A Pending GB8725913D0 (en) 1987-11-05 1987-11-05 Plant growth lamps

Country Status (1)

Country Link
GB (2) GB8725913D0 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2420220B (en) 2004-11-10 2009-10-14 Gen Electric Ceramic metal halide lamps

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL6513753A (en) * 1965-10-23 1967-04-24
GB1585861A (en) * 1976-08-18 1981-03-11 Thorn Emi Ltd Metal halide lamps
DE3376922D1 (en) * 1982-11-30 1988-07-07 Emi Plc Thorn Improvements in photoprinting lamps

Also Published As

Publication number Publication date
GB2211985B (en) 1992-05-27
GB2211985A (en) 1989-07-12
GB8725913D0 (en) 1987-12-09

Similar Documents

Publication Publication Date Title
GB8926057D0 (en) Growing plants
GB2209822B (en) Carbonising plant
GB2237965B (en) Plant pot
GB2180450B (en) Improvements in artificial plants
EP0364481A4 (en) Growth factors
GB8523316D0 (en) Artificial flowers
CS141688A2 (en) Plant growth regulator
GB2211985B (en) Improvements in plant growth lamps
GB8929256D0 (en) Bulb growth cells
GB2231563B (en) Plant antitranspirant
JPS6445399A (en) Hepar growth factor
GB2205723B (en) Growing plants
GB8807778D0 (en) Plant pots
GB8704330D0 (en) Plant supports
GB8710177D0 (en) Plant growth regulator
GB8707142D0 (en) Watering plants
GB8525690D0 (en) Making artificial flower
GB8827009D0 (en) Plant cells
AU101100S (en) Artificial flower
GB8728915D0 (en) Glasshouse
GB8825038D0 (en) Plant growth composition
KR870004150Y1 (en) Artificial flowers
GB8719901D0 (en) Decorated plant holders
GB2239175B (en) Artificial flower
IL83060A (en) Arrangement for growing plants

Legal Events

Date Code Title Description
PCNP Patent ceased through non-payment of renewal fee

Effective date: 20041103