Water and ice.
Coca leaves and ice.
Coca leaves and cola nuts.
Water and carbonated water.
Wind and rain.
Lack of lighting.
Were inside the glass and had to be moved from the outside.
Were inside the glass and could be moved from inside the streetcar.
Were outside the glass and had to be moved from the outside.
Were outside the glass and could be moved from inside the streetcar.
Protect an inventor's idea.
Enable inventors to copy one another.
Make sure that nobody has new ideas.
Make it difficult for people to invent new things.
More long lasting
He sold it.
He threw it away.
He did not throw it away.
He showed it to other people.
Try to make it stronger.
Try to make it weaker.
Stick metal parts together.
Stick on small bits of paper.
It did not damage the pages.
It did not stick onto anything at all.
It could stick things together permanently.
It could be used to stick anything together strongly.