Number | Date | Country | Kind |
---|---|---|---|
2024854 | Sep 1990 | CAX |
Filing Document | Filing Date | Country | Kind | 102e Date | 371c Date |
---|---|---|---|---|---|
PCT/CA91/00331 | 9/6/1991 | 3/23/1993 | 3/23/1993 |
Publishing Document | Publishing Date | Country | Kind |
---|---|---|---|
WO92/04091 | 3/19/1992 |
Number | Name | Date | Kind |
---|---|---|---|
756341 | Dufty | Apr 1904 | |
1406765 | Shackle | Feb 1922 | |
1545240 | Edwards | Jul 1925 | |
1648196 | Rohmer | Nov 1927 | |
1660737 | Zeman | Feb 1928 | |
1752110 | Remy | Mar 1930 | |
2616485 | Robbins | Nov 1952 | |
2648538 | Robbins | Aug 1953 | |
2839299 | Weiss | Jun 1958 | |
3109645 | Thorson | Nov 1963 | |
3110047 | Bringman | Nov 1963 | |
3246892 | Grudoski | Apr 1966 | |
3451672 | Hancovsky | Jun 1969 | |
3539181 | Larsen | Nov 1970 | |
4199138 | Kaiser | Apr 1980 | |
4484739 | Kreinbihl | Nov 1984 | |
4805898 | Jacober | Feb 1989 | |
4932648 | Ahrens | Jun 1990 |
Number | Date | Country |
---|---|---|
1337048 | Jul 1963 | FRX |
2118446 | Feb 1983 | GBX |
2221848 | Feb 1990 | GBX |
Entry |
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British Patent Specification 1488653. |
Popular Mechanics, vol. 111, No. 6, Jun. 1959, p. 108. |