Breast shield
Patent 4270538 Issued on June 2, 1981. Estimated Expiration Date: 
September 6, 1999. 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.
September 6, 1999. 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 2414697 3840012 InventorApplicationNo. 06/072954 filed on 09/06/1979US Classes:604/346, Receptacles receiving protruding body member (e.g., ears, genitalia, breast, etc.)450/37With lacteal fluid receptor or shieldExaminersPrimary: Michell, Robert W.Assistant: Shedd, C. W. Attorney, Agent or FirmInternational ClassesA61F 13/14 (20060101)A61M 1/06 (20060101) AbstractA two-piece breast shield to be worn by a nursing woman is disclosed. A base, contoured to confront the wearer's breast, has an aperture through which the nipple can pass. A dome-shaped cover overlies the base, fitting onto it to define an interior milk-receiving chamber. A small vent hole near the edge of the cover is surrounded by an inwardly extending tube to prevent milk from flowing out through the hole when the woman wearing the breast shield bends over. | |
