Fluorescent lamp for use in explosive atmospheres such as mines
CA 1069481 A · Owner: Control Products · Inventors: Dacal, Perfecto
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Lamp having a lighting assembly an inner guard assembly, and a outer guard assembly. The lighting assembly includes an elongated fluorescent bulb, starter and ballast members each having a socket portion removably connected to pins at the ends of the bulb, and an electrically conductive grounding bar interconnecting the starter and ballast members. The inner guard assembly includes a transparent cylindrical plastic housing enclosing the bulb, and end housings at the ends of the cylindrical housing enclosing the starter and ballast members respectively. The outer guard assembly includes an elongated support plate to which the end housings are fastened a plur-, ality of hoops fastened to the …
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Listed from its CIPO record in Patent Yard's archive of Canadian patents past their term. Its claims, description and drawings are in the CIPO record and on Google Patents, and the Claude kit works from them.
Why it's free to use
- Granted January 8, 1980. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended January 8, 1997.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
Sources & verification
Official CIPO records
Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.