This link should give you some idea:
http://www.usptocareers.gov/salaryrates.asp
Perusing the current openings at
http://www.uspto.gov/web/offices/ac/ahrpa/ohr/jobs/jobs.htm
indicates that the starting pay grade can be between grades 5 and 13 (about $35k up to $78k). I assume the 'steps' going across the table (left to right) governs the pay increases.
I know government jobs are pretty inflexible when it comes to salary and benefits (they want to assure that everything is equal), but I figured I'd ask.
Does anyone know if new hires are always started at step one of their grade level or could one negotiate to start at a higher step - or even start at step one with the stipulation that you jump to a higher step after a trial period like some people negotiate for non-government jobs?