Assignee
SPIRAL BINDING
4 granted patents·40 citations·filing 1975–2016
Top patents by PatentIndex Score
4 records- 0151US4020516AApparatus for binding loose sheetsSPIRAL BINDING·Filed 1975·Granted May 3, 1977·13 cites·24 claims
- 0247US4545603ARing binding with broadened ringsSPIRAL BINDING·Filed 1984·Granted Oct 8, 1985·14 cites·3 claims
- 0347US4373558ABookbinding wire stock production method and apparatusSPIRAL BINDING·Filed 1980·Granted Feb 15, 1983·13 cites·5 claims
- 0426US10532483B2Mini punchSPIRAL BINDING·Filed 2016·Granted Jan 14, 2020·0 cites·6 claims
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Counts cover granted patents and pending applications in the PatentIndex corpus. How scoring works →