This application is a division of application Ser. No. 178,337 filed Aug. 15, 1980 now abandoned.
Number | Name | Date | Kind |
---|---|---|---|
167339 | Jerrold | Aug 1875 | |
683670 | Tinkham | Oct 1901 | |
737494 | Sanborn | Aug 1903 | |
1005760 | Workman | Oct 1911 | |
1406875 | Kreutzberg | Feb 1922 | |
2164629 | Sibley | Jul 1939 | |
2401502 | Olds | Jun 1946 | |
2464506 | Hirschfield | Mar 1949 | |
2923349 | Marble | Feb 1960 | |
3696862 | Van Dijk | Oct 1972 | |
3908629 | Wiese | Sep 1975 | |
3940837 | Wiese | Mar 1976 | |
4233726 | Williams | Nov 1980 | |
4245960 | Matthews | Jan 1981 | |
4369569 | Armstrong, Jr. | Jan 1983 | |
4400965 | Schey | Aug 1983 |
Number | Date | Country |
---|---|---|
1285511 | Aug 1972 | GBX |
Entry |
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"The Soldering of Sheet-Metal Heat Exchangers", Report of Symposium, Apr. 30, 1965, published by Tin Research Institute, Freser Rd., Greenford, Middlesex. |
Number | Date | Country | |
---|---|---|---|
Parent | 178337 | Aug 1980 |