The phrase "extend the time frame" is correct and usable in written English.
You can use it when discussing deadlines or durations for projects, tasks, or events.
Example: "Due to unforeseen circumstances, we need to extend the time frame for the project completion."
Alternatives: "prolong the deadline" or "lengthen the duration."
Congress can alter the limitations period for any offense, and the Justice Department may point to Wal-Mart to ask Congress to extend the time frame in which foreign bribery charges can be filed.
NEW YORK TIMES Lloyds Bank Said to Weigh Overhaul of Bonuses | The British bank is "examining whether to ditch the concept of annual bonuses for senior staff and extend the time frame of longer-term incentives to up to 10 years, according to people briefed on a project to overhaul remuneration," The Financial Times reports.
It is unclear how long his recovery will take, but the tear in the L.C.L. is considered by doctors to be a serious complication that could extend the time frame for his return well past the start of the 2013 season.
This will make recovery more difficult and extend the time frame for a full economic recovery.
An added benefit of delaying Cars was to extend the time frame remaining on the Pixar-Disney contract to see how things would play out between the two companies.
Time lags associated with groundwater systems can extend the time frame of full depletion out decades (Figure 4) [32].
"The long arc of the middle-class squeeze," noted the presidential historian Doris Kearns Goodwin, "extends the time frame" for voters' evaluation.
Only days before, North Korea had extended the time frame for the rocket's take-off because of unexplained glitches.
In 2008 Mikulski campaigned vigorously for the Lilly Ledbetter Fair Pay Act, which extended the time frame in which pay-discrimination plaintiffs are able to file a complaint; the bill passed Congress in 2009.
