| Patents for Frank Pearn & Co., Ltd. |
Patents 31 -
43
of 43
      |
| 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-273,113 | Jun. 30, 1927 | B. Stephenson | Improvements relating to calorifiers | stationary boilers |
| GB-275,419 | Aug. 11, 1927 | H.A. Pearn | Improvements relating to boring and facing machines | metal lathes |
| GB-275,514 | Aug. 11, 1927 | H.W. Pearn | Improvements relating to vertical shaft couplings | pumps |
| GB-288,949 | Apr. 19, 1928 | H.W. Pearn | Improvements relating to reciprocating pumps | pumps |
| GB-322,120 | Nov. 28, 1929 | H.W. Pearn | Improvements relating to centrifugal pumps | pumps |
| GB-328,475 | May 01, 1930 | H.A. Pearn | Improvements relating to horizontal boring and facing machines | horizontal boring mills |
| GB-340,134 | Dec. 24, 1930 | E. Williams | Improvements relating to pumps | steam pumping engines |
| GB-386,048 | Jan. 12, 1933 | H.W. Pearn | Improvements in and relating to direct acting pumps | steam pumps |
| GB-456,179 | Nov. 04, 1936 | H.W. Pearn | Improvements in or relating to the coupling together of shafts and pump rods | pumps |
| GB-499,981 | Feb. 01, 1939 | H.W. Pearn | Improvements relating to pump valves | pumps |
| GB-524,628 | Aug. 12, 1940 | H.W. Pearn | Improvements relating to stuffing boxes for shafts or spindles | pumps |
