Number | Name | Date | Kind |
---|---|---|---|
2628401 | Fielder | Feb 1953 | |
3523331 | Weeks | Aug 1970 | |
3524222 | Gregory et al. | Aug 1970 | |
3556888 | Goldsworthy | Jan 1971 | |
4046103 | Yakuboff | Sep 1977 | |
4154563 | Johnson | May 1979 | |
4481056 | Kuhl | Nov 1984 | |
4515737 | Karino et al. | May 1985 | |
4521363 | Vogel | Jun 1985 | |
4681722 | Carter et al. | Jul 1987 | |
4755127 | Becker | Jul 1988 | |
4810429 | Mayr | Mar 1989 | |
4820366 | Beever et al. | Apr 1989 | |
4883690 | Carter | Nov 1989 | |
5073413 | Koppernacs et al. | Dec 1991 | |
5120380 | Strachan | Jun 1992 | |
5268050 | Azari | Dec 1993 | |
5310600 | Tsuya et al. | May 1994 | |
5324377 | Davies | Jun 1994 | |
5407616 | Dube | Apr 1995 | |
5492583 | Fingerson et al. | Feb 1996 |
Number | Date | Country |
---|---|---|
49-24173 | Jun 1974 | JPX |
1186514 | Jan 1988 | JPX |
262377 | May 1970 | SUX |
943151 | Jun 1960 | GBX |
1206946 | Sep 1970 | GBX |
2143770 | Feb 1985 | GBX |
Entry |
---|
"A Method for Producing Ladder Rail Using High Pressure Injection Die Impregnation"; OC Pub. No. 1-PL-19592, Jan. 1995. |
Abstract for PCT WO93/24297; Dec. 2, 1993. |
Abstract for SU 761,291; Nov. 10, 1980. |