Machine logo | Case logo | Manual logo |
Trademark TM/R | Estimated date of manufacture |
Original | | | | 1963-1970 |
New | | | |
1969-1976 |
Original | Original | | | 1963-1969 |
Original |
New | | | 1968-1970 |
New | New | | | 1969-1976 |
Original | Original (or no case) | Original | TM | 1963-1965 |
Original |
Original (or no case) | Original | R | 1965-1969 |
Original | New |
Original | R | 1968-1969 |
Original | New (or no case) | New | TM |
1968-1969 |
New | New (or no case) | New | TM | 1969-1971 |
New | New (or no case) | New | R (or none) | 1971-1976 |
Click here for an interactive version of this chart
Other combinations, such as new logo on machine with original logo on case or manual indicate those items may not be original to the
machine and offer little assistance identifying the manufacture date of the machine itself.
Note: Cases and manuals may not be original to a machine and may only help suggest a likely time frame for manufacture, they do not
confirm dates.
Logos printed on manuals and cases were able to be updated fairly quickly, but metal logos on machines took longer, perhaps a year, as
evidenced by machines with original logos in cases with new logos. Some manuals with the new logo had no trademark (TM/R). It appears
that new logo manuals originally had TM, and after the trademark was registered, TM was dropped and no R was added.
Manuals with original logo and TM or no trademark were printed from 1963-1965, with R from 1965-1969. Manuals with new logo and TM were printed from
1969-1971, and with R or no trademark from 1971-1976.
The original, text only Emdeko trademark, awarded to National Housewares, Inc. was first used in commerce in February 1963 and registered in March 1965.
It expired in June 1985. The new logo trademark, awarded to Emdeko International, Inc. was first used in commerce in July 1969 and registered in June 1971.
It expired in November 1992.