| | ||
| Home| FAQ | Search:Advanced|Person|Company| Type|Class | Login | |
| Quick search: | ||
| Patents for William Henry Spivey | |||||
      | |||||
| Number | Date | Patentee | Title | Type | |
| GB-559,321 | Feb. 14, 1944 | W.H. Spivey | Improvements in or relating to "knurling" or like machines | embossing and knurling machines | |
| GB-618,141 | Feb. 17, 1949 | W.H. Spivey, B. Stevens | Improvements in or relating to pins and plugs for electrical plug and socket connections | electric switches | |