2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/48344This talk discusses the sensitivity of electron-positron and proton-antiproton Penning-trap experiments to CPT- and Lorentz-violating effects in the context of an extension of the minimal standard model and quantum electrodynamics.6 pages, talk presented by R.B. to appear in the Proceedings of Orbis Scientiae 1997-II, Miami, Florida, December 1997High Energy Physics - Phenomenologytext