E01C 11/20

For prestressed concrete pavings

Official title: for prestressed concrete pavings {(from prefabricated concrete units, similar prestressed units E01C5/10)}

E01C11/20 (For prestressed concrete pavings) appears on 9 US grants and 8 published applications in this corpus.

Search patents in E01C
Granted patents
9
Published applications
8
Assignees
8
Inventors
15
Latest grant
13 Aug 2019

Filings by year

E01C 11/20: granted patents and published applications per publication year
YearGranted patentsPublished applications
197810
197900
198000
198110
198200
198300
198400
198500
198610
198700
198800
198900
199000
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199500
199600
199700
199800
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200000
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200600
200700
200800
200900
201000
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201200
201300
201400
201501
201623
201711
201822
201910
202000
202100
202200
202301

By publication year. Applications have been published since 2001.

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By later US patents