Patent Leaderboard
USPTO Patent Rankings Data through Dec 31, 2025
Home › Hatch cover and locking structure

Hatch cover and locking structure

US Patent 4622902 · Granted Nov 18, 1986

Assignee

No assignee recorded.

Inventors

View full patent text on Google Patents →

More Patents by These Inventors

Inflatable urinal for attachment to a toilet2005
Converted multiple hopper rail car and method for making same2003
Wood chip railway car constructed by converting a standard box car and method of1993
Sliding hopper outlet gate with plastic upper surface for smooth sliding and for1991
Hatch cover assembly1990
Hatch cover assembly1990
Integrated optic print head1990
Method of converting a hopper type of rail car to accept a wider output gate1987
Multiple hopper rail car with offset vertical weld from conversion1987
Pneumatic gate operator and outlet cap1987
Hatch cover structure1987
Hatch cover lock1987