The Future of Flexible Frank
The Door into SummerThe uncertain fate of Dan's stolen prototype becomes a subplot about authorship, industrial inheritance, and the difference between a design's survival and its inventor's control.
increasing
Bearing strength in each event
decreasing
A Prototype with Promise

A Prototype with Promise
A working demonstration
Dan's Flexible Frank performs a range of household tasks and impresses Miles, who immediately asks how soon the design can be produced. Dan insists that the machine is not ready for commercial release.
The engineering dispute
Their disagreement is not merely about timing. Dan regards quality and repairability as engineering responsibilities, while Miles sees production and market opportunity as business decisions.
The Model Disappears

The Model Disappears
Missing from the shop
Dan returns to find that Flexible Frank and his working notes are absent. The loss leaves him unable to prove what was taken or immediately continue the work.
An incomplete account
The theft becomes part of his accusation against Miles and Belle, but the legal papers and the lack of independent witnesses leave him unable to establish ownership in court.
Belle's Version

Belle's Version
A machine supposedly stolen
Belle tells Dan that Flexible Frank vanished after Miles moved it for protection, and that the notes were inside its base. She believes Dan must have taken it, although he was in cold sleep.
Suspicion without resolution
Her account is clouded by age, drugs, and habitual deception. Dan learns that the project mattered to the Mannix negotiations, but cannot establish exactly who moved it or what became of its files.
A Patent in Dan's Name

A Patent in Dan's Name
Recognition of authorship
Dan finds the first Eager Beaver patent bearing the name D. B. Davis. The drawings are not identical to his initial prototype, but the underlying design and its development fit his own work.
Pride without recovery
The discovery restores Dan's professional confidence. It does not restore the stolen years or prove who made the intervening decisions, and the patent has already expired.
A Legacy in Production

A Legacy in Production
An industrial descendant
Dan sees Eager Beaver and related automatons as descendants of his early work, refined through decades of engineering. The prototype's influence outlasts the dispute over who controlled it.
A changed relationship to ownership
Rather than recreate the same battle for control, Dan develops new devices and licenses them. The legacy of Flexible Frank becomes a source of knowledge and pride rather than a claim he must pursue forever.
Before November 1970
19 November 1970, after the ouster
May 2001, during Dan's visit
Spring 2001, after the archive records arrive
2001 and afterward