With Supporting Means For Coupling Part Patents (Class 439/527)
- With securing by movement of coupling part in plane of panel (Class 439/545)
- With opening encircling retaining collar (Class 439/550)
- Including resilient securing (Class 439/552)
- With sealing to panel (Class 439/559)
- Coupling part secured to panel by stressing beyond elastic limit (Class 439/560)
- Coupling part including panel engaging shoulder (Class 439/562)