Chelomei's heavy launcher, still flying
Chelomei develops the Proton heavy rocket and proposes the Almaz, a crewed military reconnaissance space station with its own return capsule and defensive gun.
Chelomei dies in Moscow; his Proton rocket and station modules outlive him by decades, still flying into the 21st century.
This object is named in 4 verified source entries across 1 dossier of this book. The entries sit with the people who built or used it, which is where the research recorded them.