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These codes provided him with the date of manufacture, should a defect be found, allowing him to maintain records of repairs.Fortunately, those date codes are a tremendous help today in the ability of collectors to correctly identify the year any given Zippo lighter was made.

This is followed by the registered trademark sign ® and the abbreviation "PAT. This page contains details of how I set about dating these lighters and contains valuable information as to what to look for.If you can add any information please feel free to contact me The factory in Canada opened in 1949 and closed in 2002.Codes were not used on the lighters until 1987, so we have to look closely at the bottom stamp and the insert to try to determine the date of manufacture.When writing this page I have used information from lighters that were engraved, at the factory, with either a date or a company logo with a specific anniversary.I have had to research the individual companies to discover the date the company was formed in order to determine the year that the anniversary was celebrated.Dating Zippo lighters produced in Canada from 1950 until 1986 is difficult due to the lack of date coding.

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