Halliburton Co. moved Friday to overthrow the board of rival Baker Hughes Inc., after merger talks between the oil-services companies broke down. The impasse came on the deadline to nominate directors to Baker Hughes’s board for the company’s annual meeting in April. Baker Hughes’s directors are all up for election every year, meaning Halliburton could seize control with one fell swoop. “Baker Hughes is disappointed that Halliburton has chosen to seek to replace the entire Baker Hughes board rather than continue the private discussions between the parties,” said Baker Hughes Chief Executive Martin Craighead. A Halliburton spokeswoman declined to comment.