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US2020346851A1
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Systems and methods for removal and collection of fats, oils, and greases from a residence or establishment
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US2019092655A1
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System and method for removal of fats, oils, and greases
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US2013180083A1
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Rally towel apparatus
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US1138160A
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Compression-stop and waste valve.
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US1119554A
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Attachment or force-tube for drain-valves.
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US1127552A
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Stop and waste valve.
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US1053075A
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Combined stop and drain valve.
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GB191205423A
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Improvements in and relating to Pit and Shaft Sinking.
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US1062524A
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Turning-plug.
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GB191300204A
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Improvements in and connected with the Sinking of Pits and Shafts.
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GB191200892A
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Improvements in and connected with the Sinking of Pits and Shafts.
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US1003307A
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Drainage system.
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US995930A
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Drainage system.
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US965772A
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Drain-valve.
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GB190925362A
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Improvements in Safety Devices applicable for use in the Raising and Lowering of Hoppits, Cages, and other Receptacles, in Pits or Shafts.
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GB190921849A
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Improvements in the Method of and Apparatus for Removing Earth and Debris from Pits, Shafts and like Excavations.
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GB190921850A
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Improvements in and relating to Linings for Pits, Shafts and the like.
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US965129A
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Valve.
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US961821A
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Valve.
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GB191012914A
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Improvements in and relating to the Pumping of Pits or Shafts.
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