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§ 11.11 Words in Drawings - Appendix T Patent Cooperation Treaty
§ 11.11 Words in Drawings
(a) The drawings shall not contain text matter, except a single word or words, when absolutely indispensable, such as "water," "steam," "open," "closed," "section on AB," and, in the case of electric circuits and block schematic or flow sheet diagrams, a few short catchwords indispensable for understanding.
(b) Any words used shall be so placed that, if translated, they may be pasted over without interfering with any lines of the drawings.
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