Patent family

US 4280957

Continuation, divisional, and parent applications sharing a priority claim with this patent. Most asserted patents are continuations — the sibling list is the assertion surface a defendant has to plan against. Sourced from Google Patents, cached for 30 days.

Patent family (19)

Continuations, divisionals, and parent applications sharing a priority claim with this patent. Most asserted patents are continuations — siblings expand the assertion surface a defendant has to plan against.

Earliest priority
Sep 11, 1974
Projected expiration
Sep 11, 1994expired
Application number
US05/905,820

Parent applications (2)

Other priority claims (16)

Sourced from Google Patents · Cached for 30 days · Projected expiration is 20 years past earliest priority and does not reflect terminal disclaimers, patent term adjustment, or extension.