Inventor · disambiguated record
William A. Spring
Also filed as: SPRING WILLIAM A
4 granted patents·129 citations·filing 1982–2000
80Inventor score
Files withILLINOIS TOOL WORKS4
Top patents by PatentIndex Score
4 records- 0194US6109851AScrews having selected heat treatment and hardeningILLINOIS TOOL WORKS·Filed 1999·Granted Aug 29, 2000·59 cites·25 claims
- 0284US6364972B1Method for selectively hardening a carbon steel screwILLINOIS TOOL WORKS·Filed 2000·Granted Apr 2, 2002·15 cites·21 claims
- 0373US4523883APrinted circuit board fastenerILLINOIS TOOL WORKS·Filed 1982·Granted Jun 18, 1985·35 cites·5 claims
- 0458US4652971APrinted circuit board fastenerILLINOIS TOOL WORKS·Filed 1984·Granted Mar 24, 1987·20 cites·8 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →