Requests for Reexaminations Filed Notice under 37 CFR 1.11(c). The requests for reexamination listed below are open to inspection by the general public in the indicated Examining Groups. Copies of the requests and related papers may be obtained by paying the fee therefor established in the Rules (37 CFR 1.19(a)). In the event correspondence to the patent owner is not received, this notice will be considered to be constructive notice to the patent owner and reexamination will proceed (37 CFR 1.248(a)(5) and 1.525(b)). 4,399,407, Reexam. No. 90/004,031, Nov. 13, 1995, Cl. 324/379, ENGINE ANALYSER WITH CONSTANT WIDTH DIGITAL WAVEFORM DISPLAY, Michael J. Kling, et. al., Owner of Record: SPX Corp., Muskegon, Mich., Attorney or Agent: David R. Fairbairn, Kinney & Lange, Minneapolis, Minn., Ex. Gp.: 2213, Requester: Snap-On Inc., Kenosha, Wis., c/o H. V. Stotland & J. Terry Stratman, Emrich & Dithman, Chicago, Ill. 5,037,437, Reexam. No. 90/004,032, Nov. 14, 1995, Cl. 623/016, METHOD OF BONE PREPARATION FOR PROSTHETIC FIXATION, Frederick A. Matsen, III, Owner of Record: University of Washington, Seattle, Wash., Attorney or Agent: Kinney & Lange, Minneapolis, Minn., Ex. Gp.: 3308, Requester: Richard J. Anderson, Fish & Richardson, Minneapolis, Minn. 5,375,853, Reexam. No. 90/004,030, Nov. 1, 1995, Cl. 277/059, GAS LUBRICATED BARRIER SEAL, James R. Wasser, et. al., Owner of Record: John Crane, Inc., Morton Grove, Ill., Attorney or Agent: Vangelis Economou, Dorn, McEachran, Jambor & Keating, Chicago, Ill., Ex. Gp.: 3108, Requester: Owner