Assignee
SPIRAL STEP TOOL CO
5 granted patents·193 citations·filing 1973–1983
Top patents by PatentIndex Score
5 records- 0194US4036242AHopper payout for various coin denominationsSPIRAL STEP TOOL CO·Filed 1975·Granted Jul 19, 1977·82 cites·11 claims
- 0285US3942544AHopper payout for various coin denominationsSPIRAL STEP TOOL CO·Filed 1973·Granted Mar 9, 1976·34 cites·35 claims
- 0382US4608643AAutomatic tool grinding machine with computerized controlSPIRAL STEP TOOL CO·Filed 1983·Granted Aug 26, 1986·49 cites·4 claims
- 0482US4068414AAutomatic flute grinding machineSPIRAL STEP TOOL CO·Filed 1977·Granted Jan 17, 1978·23 cites·20 claims
- 0543US4107882ADrill pre-pointing machineSPIRAL STEP TOOL CO·Filed 1977·Granted Aug 22, 1978·5 cites·16 claims
Join the waitlist — get patent alerts
Get an alert when SPIRAL STEP TOOL CO files or is granted a new patent.
We store only your email — no account needed. See our privacy policy.
Counts cover granted patents and pending applications in the PatentIndex corpus. How scoring works →