4 ms·
This line in the patent: This is a divisional of application Ser. No. 09/919,672, filed Jul. 31, 2001. means that it was effectively filed on that date, so
by cduan 16y ago
This line in the patent:
This is a divisional of application Ser. No. 09/919,672, filed Jul. 31, 2001.
means that it was effectively filed on that date, so you would need prior art predating 2001. (Though it might be more complicated than that, it depends on a couple of things.)
- cromulent 16y agoAlso, FlightPrep refer to a 2004 review of online flight planners from the Aviation Consumer magazine. So, I would guess they date their invention before that. http://www.flightprep.com/rootpage.php?page=aviationconsumer http://www.flightprep.com/rootpage.php?page=aviationconsumer