Do all leaf blowers have mufflers?

This may be a stupid question but I want to know if all leaf blowers would be included in this section of my cities ordinances.



13. Lawn and Garden Equipment. The sound emitted by motor-powered,

muffler-equipped lawn and garden equipment operated between the hours of

nine oclock (9:00) p.m. and six-thirty oclock (6:30) a.m.



Thanks.