Patents for William Alfred Pearn |
Patents 16 -
20
of 20
|
Number | Date | Patentee | Title | Type |
GB-212,965 | Mar. 17, 1924 | W.A. Pearn | Improvements relating to boring, facing and like machines | horizontal boring mills |
GB-213,952 | Apr. 15, 1924 | W.A. Pearn | Improvements relating to boring, facing and like machines | horizontal boring mills |
GB-214,329 | Apr. 22, 1924 | W.A. Pearn | Improvements relating to boring, facing and like machines | horizontal boring mills |
GB-220,904 | Aug. 28, 1924 | W.A. Pearn | Improvements relating to boring, facing and like machines | horizontal boring mills |
GB-237,679 | Aug. 06, 1925 | W.A. Pearn | Improvements relating to grinding and like machines or attachments | horizontal boring mills |