"jointly provided" is correct and usable in written English.
You can use it to describe when two or more people or entities have provided something together. For example: The university and the local community jointly provided funding for the new medical centre.
Camden's officials argue that their planning was based on figures jointly provided by the Greater London Assembly and central government.
It was found that microstructural layering and the presence of interlayers in TiN multilayers jointly provided resistance to deformation by intercolumnar shear sliding, observed more evidently in the monolithic TiN coatings.
Then she found Harold DeRienzo, the president of Banana Kelly, who brought in two partners, Wavecrest, a for-profit management company, and FCE College Avenue, a financial firm, which jointly provided the money for the deal.
Over the last year we have turned one of our services into a local authority-owned trading company; our legal service is now jointly provided with Labour-controlled Harrow; our music service is to become a registered charity; and our recycling services are being brought in-house.
Therefore, the a-phase load current iLa is jointly provided by the grid and parallel converter.
This is also the first time (apart from Sweden where there is an existing initiative) that several large media groups have jointly provided advertising in a barter deal to start-ups.
Internet media and software company RealNetworks and IBM said Friday that they would jointly provide services for content providers that want to set up their own Internet video and audio businesses.
The US and UK governments jointly provide more than 40% (pdf) of global humanitarian contributions.
On Friday, the European Bank of Reconstruction and Development, the European Investment Bank and the World Bank said they would jointly provide $31.1 billion to support Eastern European nations, but much more will be needed.
He signed an agreement with Mexico in 1980 to jointly provide Central American and Caribbean countries with a steady flow of oil, a precursor of Mr. Chávez's wide-reaching oil diplomacy in the developing world.
Over the next 10 years this will enable us to leverage Logica's expertise and jointly provide a technologically advanced platform to reduce the cost of fraud to the UK economy.
