Patent Leaderboard
USPTO Patent Rankings Data through Dec 31, 2025
Home › Semi-instantaneous water heater with helical heat exchanger

Semi-instantaneous water heater with helical heat exchanger

US Patent 5233970 · Granted Aug 10, 1993

Assignee

No assignee recorded.

Inventors

View full patent text on Google Patents →

More Patents by These Inventors

Method and kit for repairing leaks in gas-filled inflatable object2021
Damage resistant mailbox support structure2007
Carabiner for use with strap2003
Exercise and posture correcting device1999
Animal leash with snap link1996
Animal leash1994
Variable orifice gas modulating valve1993
Variable orifice gas modulating valve1993
High turndown sheet metal atmospheric gas burner1992
Knife assembly for stripping auger drum of combine header1981
Process for photoinitiated, polymeric encapsulation of cotton fibers in durable-1981