Hydrotherapy apparatus and ducting therefor
Patent 4170044 Issued on October 9, 1979. Estimated Expiration Date: 
October 9, 1996. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.
October 9, 1996. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent References 2719307 2798768 2956565 3251071 3465654 3903929 InventorApplicationNo. 05/604602 filed on 08/14/1975US Classes:4/488, POOL TYPE138/178MISCELLANEOUSExaminersPrimary: Aegerter, Richard E.Assistant: Schmidt, Frederick R. Attorney, Agent or FirmInternational ClassesA47K 3/10 (20060101)A61H 33/02 (20060101) AbstractHydrotherapy apparatus including continuous extruded plastic ducting of keyhole shape in cross-section adapted to be installed in the wall of a water pool and having a multiplicity of air dispensing perforations substantially flush with the interior wall surface. The ducting is readily assembled and installed by unskilled labor in a wide variety of configurations using simple tools and fittings and is connectable to a source of pressurized air. | |
