| Patents for Harry Alfred Pearn |
Patents 1 -
4
of 4
      |
| Number | Date | Patentee | Title | Type |
| GB-259,064 | Oct. 07, 1926 | H.A. Pearn | Improvements relating to boring and facing machines | horizontal boring mills |
| GB-261,551 | Nov. 25, 1926 | H.A. Pearn | Improvements relating to boring and facing machines | horizontal boring mills |
| GB-275,419 | Aug. 11, 1927 | H.A. Pearn | Improvements relating to boring and facing machines | metal lathes |
| GB-328,475 | May 01, 1930 | H.A. Pearn | Improvements relating to horizontal boring and facing machines | horizontal boring mills |
