Inventor
HELLMAN KARL H
US7 patents
⚠️ This page may combine multiple inventors who share the name “HELLMAN KARL H”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
US ARMY
5 patentsUS5579640ADec 3, 1996
Accumulator engine
US ARMY164 citations98
US5495912AMar 5, 1996
Hybrid powertrain vehicle
US ARMY302 citations96
US5609131AMar 11, 1997
Multi-stage combustion engine
US ARMY56 citations95
US5505527AApr 9, 1996
Anti-lock regenerative braking system
US ARMY102 citations94
US5549087AAug 27, 1996
Combined cycle engine
US ARMY49 citations92