Number | Name | Date | Kind |
---|---|---|---|
2422534 | DuBois | Jun 1947 | |
2527027 | Mull | Oct 1950 | |
2877463 | Watkins | Mar 1959 | |
3000011 | Sterne et al. | Sep 1961 | |
3027562 | Widenor | Apr 1962 | |
3395406 | Smith | Aug 1968 | |
3418658 | Danico | Dec 1968 | |
3517393 | Beauchef | Jun 1970 | |
4264988 | Specht | May 1981 | |
4468819 | Ohno et al. | Sep 1984 | |
4670914 | Harris | Jun 1987 | |
4689838 | Angermann et al. | Sep 1987 | |
4716601 | McNeal | Jan 1988 |
Number | Date | Country |
---|---|---|
0699465 | Nov 1953 | GBX |
0879077 | Oct 1961 | GBX |
0921203 | Mar 1963 | GBX |
0931850 | Jul 1963 | GBX |
Entry |
---|
American Optical Safety Products Brochure (2 Sides); 1976. |