G09F 13/12

Using a transparent mirror or other light reflecting surface transparent to transmitted

Official title: using a transparent mirror or other light reflecting surface transparent to transmitted light whereby a sign, symbol, picture or other is visible only when illuminated

G09F13/12 (Using a transparent mirror or other light reflecting surface transparent to transmitted) appears on 157 US grants and 142 published applications in this corpus.

Search patents in G09F
Granted patents
157
Published applications
142
Assignees
60
Inventors
212
Latest grant
4 Aug 2026

Filings by year

G09F 13/12: granted patents and published applications per publication year
YearGranted patentsPublished applications
197610
197710
197800
197930
198020
198140
198200
198320
198400
198510
198610
198720
198830
198900
199000
199110
199200
199340
199410
199500
199620
199710
199840
199920
200040
200110
200212
200311
200422
200514
200615
200704
200842
200922
201026
201114
201255
201334
201440
201527
201643
201723
201836
201917
2020913
20212430
20221723
2023163
202482
202524
202620

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

Recent patents

Most cited

By later US patents