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Detailed technical cross-section drawing of a car key fob showing internal components like springs, release button, and key blade with labels.

Detailed technical cross-section drawing of a car key fob showing internal components like springs, release button, and key blade with labels.

Technical cross-section engineering drawing of a retractable car key fob, internal mechanism view, showing dual spring system (light spring on top, heavy spring on bottom), large ergonomic release button centered on case, key blade with textured grip pattern, polypropylene housing 40mm width, detailed 2D technical illustration with labels, white background, black lines, patent drawing style Mehr sehen