Bull SA has had to be patient in its effort to acquire all of the computer interests of Honeywell Inc simply because it did not have the resources to buy everything outright, even with help from NEC Corp. But it now has 70% of Bull HN Information Systems and feels able to afford to add the last of Honeywell’s US interests to that company. Accordingly, Bull HN is to buy Honeywell Federal Systems Inc, which sells Bull computers to the US government as part of integrated systems. It employs 1,600 people and had turnover of $274m last year.