Questions tagged [us5278057]

The tag has no usage guidance.

Filter by
Sorted by
Tagged with
2 votes
1 answer
97 views

Is US 5278057 A still in force?

This is a continuation of patent EP 0198288 A3. The last legal event recorded for the continuation patent is an expiration in 2006 due to failure to pay a maintenance fee. Does this mean that the ...
user avatar