A61F 2230/0091

Helically-coiled or spirally-coiled, i.e. having a 2-d spiral cross-section

Official title: helically-coiled or spirally-coiled, i.e. having a 2-D spiral cross-section

A61F2230/0091 (Helically-coiled or spirally-coiled, i.e. having a 2-d spiral cross-section) appears on 1,349 US grants and 1,812 published applications in this corpus.

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Published applications
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2,165
Latest grant
6 Oct 2026

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197720
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197910
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198110
198200
198300
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198520
198600
198700
198830
198950
199020
199150
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199480
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199670
1997130
1998190
1999240
2000220
20011913
20022037
20033554
20042871
20052276
20062147
20072758
2008962
20093059
20103254
20114654
20124458
20135041
20145267
20156268
20164581
20176079
20186592
201973104
202079116
20217294
20228398
20236983
20246892
202572103
20263351

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