The phrase "already developed before" is correct and usable in written English.
It can be used to indicate that something was created or established prior to a certain point in time or event.
Example: "The technology was already developed before the project began, which gave us a significant advantage."
Alternatives: "previously established" or "already created earlier".
But what was also incorporated, in the course of Grace's career, was the snobbery, falsehood and hypocrisy that would disfigure the game well into the 20th century and prevent it, in England at least, from achieving the mass appeal that football was already developing before the end of the Victorian era.
In both our study and the Adamzik study then, patients had already developed sepsis before TEG detected changes in fibrinolysis.
This low CD4 count is associated with higher prevalence of ocular manifestation as shown in this study and patients might have already developed the manifestation before initiation of HAART.
Next, using methods already developed by mathematical physicists before asymptotics (7.29) and (7.30) were derived, we can answer several questions with far better precision than before; for simplicity, we assume that (age N^{-frac{1}{3}+delta }).
The reconstruction and analysis of the pelvises of both specimens revealed that they had already developed certain modern features before brain size began to increase.
At the Accountability Lab and Local Interventions Group, we had already developed youth networks across Nepal before the earthquake.
According to West, the fact that Hawaii's area code was "808" was coincidental, as he had already developed the album's title before being informed.
Second, all of the participants in the trial had already developed cancer in one breast before being screened for cancer in the second breast.
The courts also added that a Swedish company, Neonode, had already developed the swipe to unlock feature before Apple ever introduced the iPhone.
