G03B 21/56

Projection screens

G03B21/56 (Projection screens) appears on 2,687 US grants and 2,691 published applications in this corpus.

Search patents in G03B
Granted patents
2,687
Published applications
2,691
Assignees
942
Inventors
4,539
Latest grant
6 Oct 2026

Filings by year

G03B 21/56: granted patents and published applications per publication year
YearGranted patentsPublished applications
1976130
1977130
1978120
1979110
1980140
198160
1982170
1983110
1984120
1985180
198650
1987170
1988130
198970
1990220
1991320
1992270
1993210
1994200
1995230
1996210
1997280
1998340
1999340
2000430
20014216
20025667
20035948
200466107
200561135
200684152
200778159
200898112
200976115
20109678
201110895
20128894
20137675
201465100
201590101
201696157
2017123143
2018123154
2019132148
2020132117
202187128
2022115122
20237786
20248463
20256159
20264060

By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.

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Granted patents

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By later US patents