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Patents for Frank Pearn & Co., Ltd.
Patents 31 - 43 of 43
First set of recordsPrevious set of recordsLast set of records
NumberDatePatenteeTitleType
GB-259,064Oct. 07, 1926H.A. PearnImprovements relating to boring and facing machineshorizontal boring mills
GB-261,551Nov. 25, 1926H.A. PearnImprovements relating to boring and facing machineshorizontal boring mills
GB-273,113Jun. 30, 1927B. StephensonImprovements relating to calorifiersstationary boilers
GB-275,419Aug. 11, 1927H.A. PearnImprovements relating to boring and facing machinesmetal lathes
GB-275,514Aug. 11, 1927H.W. PearnImprovements relating to vertical shaft couplingspumps
GB-288,949Apr. 19, 1928H.W. PearnImprovements relating to reciprocating pumpspumps
GB-322,120Nov. 28, 1929H.W. PearnImprovements relating to centrifugal pumpspumps
GB-328,475May 01, 1930H.A. PearnImprovements relating to horizontal boring and facing machineshorizontal boring mills
GB-340,134Dec. 24, 1930E. WilliamsImprovements relating to pumpssteam pumping engines
GB-386,048Jan. 12, 1933H.W. PearnImprovements in and relating to direct acting pumpssteam pumps
GB-456,179Nov. 04, 1936H.W. PearnImprovements in or relating to the coupling together of shafts and pump rodspumps
GB-499,981Feb. 01, 1939H.W. PearnImprovements relating to pump valvespumps
GB-524,628Aug. 12, 1940H.W. PearnImprovements relating to stuffing boxes for shafts or spindlespumps
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