Rock bolt resins
Patent 4136774 Issued on January 30, 1979. Estimated Expiration Date: 
December 22, 1997. 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.
December 22, 1997. 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 2582228 3100045 3403520 3474898 3698196 3756388 Cartridges containing self-setting mixes Dual compartment package and method for making same Patent #: 4009778 InventorAssigneeApplicationNo. 05/863134 filed on 12/22/1977US Classes:206/219, FOR MIXING405/259.6Breaking canister or packetExaminersPrimary: Smith, Robert I.Attorney, Agent or FirmInternational ClassesE21D 20/02 (20060101)E21D 20/00 (20060101) AbstractA two pocket rock bolt resin package containing, in one pocket, a polyester together with sodium bicarbonate and calcium carbonate and, in a second pocket, a curing agent, water and a weak acid. | |
