Low pressure discharge lamp
CA 1212980 A · Owner: Mitsubishi Denki Kabushiki Kaisha · Inventors: Yamamoto, Kouji; Ito, Hiroshi; Takeda, Takao
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A low pressure discharge lamp of double tube structure comprises an outer bulb containing therein a sealed gas and having one end closed and at least one inner tube supported by an end plate to communicate with the interior of the outer bulb; receiving therein electrodes and restricting an electric dischargeing path. The ends receiving therein the electrodes of the inner tube are bonded with an adhesive on the surface on the side facing the outer bulb of the end plate and a part of each end other than said ends of said inner tube is in contact to and supported by the end plate. The construction makes bonding operations of the inner tube to the end plate easy and provide a stable condition …
Read the whole patent
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 October 21, 1986. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended October 21, 2003.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
Timeline
Timeline From CIPO dates
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.