![]() | |||
| Home| FAQ | Search:Advanced|Person|Company| Type|Class | Login | |
| Quick search: | ||
| Patents for Porter Mfg. Co. | |||||
| Number | Date | Patentee | Title | Type | |
| 291,934 | Jan. 15, 1884 | D.R. Porter | Wrench | pipe wrenches | |
| CA-20,932 | Jan. 22, 1885 | D.R. Porter | Wrench | pipe wrenches | |
| 389,899 | Sep. 25, 1888 | D.R. Porter | Pipe Wrench | quick adjust wrenches | |