This isn't an inventor in the story
Probably the most famous inventor in Duckburg is Gyro Gearloose.
He was in his own room
We now see that Scrooge was all but abandoned by his father at boarding school even at christmas
The name Ebenezer comes from the Hebrew language and means "stone of help." In A Christmas Carol, the name Ebenezer Scrooge symbolizes that Scrooge is in need of help or redemption to change his ways and find joy and compassion in his heart.
The ghost of his old buisness partner Jacob Marley.
Simply to invite his old uncle to dine with him and his family
Marley is the deceased business partner of Ebenezer Scrooge in Charles Dickens' novel "A Christmas Carol". Marley comes back as a ghost to warn Scrooge about his miserly ways and the consequences in the afterlife.
The story of 'A Christmas Carol' revolves around an old man, known as Ebenezer Scrooge, who is an extreme miser. He does not believe in the spirit of Christmas and his only concern is accumulation of wealth. Nothing in this world is as dear to him as money. Scrooge's business partner, Jacob Marley, has died and on this Christmas Eve, exactly seven years have passed since his death. Scrooge and his clerk, Bob Cratchit, are working on Christmas Eve also. Scrooge's nephew, Fred, comes to wish him on Christmas, but Scrooge drives him away. Scrooge finally declares the day off and comes back home.
In "A Christmas Carol," Scrooge's only visitor is his deceased business partner, Jacob Marley, who appears as a ghost. Scrooge does not have any friends early in the story, but he eventually connects with his nephew Fred and with Bob Cratchit and his family.
The nephew of Scrooge, Fred, comes to Scrooge's business to invite him to a Christmas celebration. Despite Scrooge's grumpiness and refusal, Fred continues to extend the invitation with warmth and cheer.
Ebenezer Scrooge comes to mind- from a famous short story by Charles Dickens.
In part of the book when Scrooge is still mean, a caroler comes to his window and sings a carol in hope of food. Scrooge in turn throws a something at him and shoos him away.