john said:

There are patches of dead grass or weeds on my lawn. To repair them I have
to manually pull out the thatch, spread grass seeds, then cover the seeds
with soil. This is a lot of work.

Is there some tool that would insert the grass seeds into the soil, past the
thatch?

You could rent a power rake to remove the thatch. Then rent a slice seeder.
--

Eggs

-Someone who thinks logically provides a nice contrast to the real world.