Number | Name | Date | Kind |
---|---|---|---|
1533299 | Armknecht | Apr 1925 | |
2246211 | Kilich | Jun 1941 | |
2612403 | Burch | Sep 1952 | |
2947316 | Walker | Aug 1960 | |
2986162 | Spexarth | May 1961 | |
3321097 | Solowey | May 1967 | |
3589569 | Bonetti | Jun 1971 | |
4132361 | Ryd | Jan 1979 | |
4217054 | Gacki et al. | Aug 1980 | |
4335837 | Bono | Jun 1982 | |
4370998 | Kimpara | Feb 1983 | |
4575007 | Groth et al. | Mar 1986 | |
4676437 | Brown | Jun 1987 | |
4790454 | Clark et al. | Dec 1988 | |
4823829 | Woods | Apr 1989 | |
4908187 | Holmquist et al. | Mar 1990 | |
4993596 | Brown | Feb 1991 | |
5033649 | Copeland et al. | Jul 1991 | |
5100059 | Englhard et al. | Mar 1992 | |
5255820 | Thomas | Oct 1993 | |
5259557 | Spriggs et al. | Nov 1993 | |
5344074 | Spriggs et al. | Sep 1994 | |
5372129 | Ryder | Dec 1994 | |
5372310 | Ketcham | Dec 1994 | |
5443094 | Olson et al. | Aug 1995 | |
5518020 | Nowicki et al. | May 1996 | |
5544810 | Horvath, Jr. et al. | Aug 1996 | |
5556001 | Weissman et al. | Sep 1996 | |
5584327 | Thomas et al. | Dec 1996 | |
5597019 | Thomas et al. | Jan 1997 | |
B14217054 | Gacki et al. | Jun 1984 |
Number | Date | Country |
---|---|---|
0 551 254 B1 | Apr 1996 | EPX |
H 105 97 | May 1997 | DEX |
2 297 306 | Jul 1996 | GBX |
Entry |
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"Introducing| The Power Tool for Cleaning," S. C. Johnson & Son, Inc., Advertising Brochure, 8 pgs. (.COPYRGT. 1997). |