Assignee
MCGRAW HILL INC
US·6 granted patents·569 citations·filing 1977–1988
Top patents by PatentIndex Score
6 records- 0194US4868866ABroadcast data distribution systemMCGRAW HILL INC·Filed 1988·Granted Sep 19, 1989·541 cites·15 claims
- 0269US4349163ACoreless roll film structure and apparatus for winding thereofMCGRAW HILL INC·Filed 1980·Granted Sep 14, 1982·9 cites·12 claims
- 0361US4842402AProjection and viewing apparatusMCGRAW HILL INC·Filed 1986·Granted Jun 27, 1989·9 cites·14 claims
- 0445US4601572AMicrofilming system with zone controlled adaptive lightingMCGRAW HILL INC·Filed 1985·Granted Jul 22, 1986·4 cites·10 claims
- 0542US4136938AOptical projection apparatusMCGRAW HILL INC·Filed 1977·Granted Jan 30, 1979·2 cites·33 claims
- 0636USD261368SDrawing instrumentMCGRAW HILL INC·Filed 1979·Granted Oct 20, 1981·4 cites·1 claims
Join the waitlist — get patent alerts
Get an alert when MCGRAW HILL INC files or is granted a new patent.
We store only your email — no account needed. See our privacy policy.
Counts cover granted patents and pending applications in the PatentIndex corpus. How scoring works →