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[Question_2007]

How many they are at the most?
20 drawings?

I don't understand the concept of the drawings.

-----------------

Plus,

I don't want to use an attorney or patent agent in my new apllication for a utility patent
so
where can I find an eraser or an example of how fill it?

[Jonathan]

There is no limit to how many drawings one can include in a patent application.

I assume your statement as to you why you do not understand the concept of drawings is that you don't understand why drawings need to be included in patent applications.

They need to be included, in practically all patent applications, in order to sufficiently detail an invention to allow others to reproduce the invention.

However, to err on the side of caution, if you truly don't understand the concept of drawings then you definitely need to consult with a patent practitioner.

[Question_2007]

Thanks so much for ur help, Sr.

About the question of where I can find an example (of a an utility patent application, I mean, the fresh format that I will send to the USPTO before it is a Patent Application Publication, no te format they later will publish online as A1, etc..

[Wiscagent]

I'll echo Jonathan's recommendation to consult with a patent practitioner.  Nevertheless if you want to see examples of the paperwork that goes to the patent office with a patent application, first look up some recent patent application publications in the same general field of technology as your invention; jot down the application number or publication number; and then go to this site:
http://portal.uspto.gov/external/portal/pair

Enter the appropriate numbers and you can review the paperwork that went back and forth between the patent office and the applicant.

Good luck.

[Question_2007]

Thanks you so much too!!

Yes, I will go to the link you gave me.

I am very sastified with the answers of you both!

Thanks  a lot!!!!

[JimIvey]

For what it's worth, I've filed applications with more than 80 figures and probably one or two with more than 100.  The only limits are practical ones -- how much paper do you want to use, how many extra page fees can you afford, how much disk space do you want to consume, how much can you reasonably file (once filed a 700-page application in a banker's box), how much are you willing to annoy the examiner, etc.

Regards.

[Wiscagent]

To build on Jim's "practical limits," another one is that the ideal patent application contains everything that is needed, but nothing more.  Each drawing in the application carries potential problems along with it.  The problems may be mere formalities, or the problems may be substantive - e.g. figure 23 looks just like some prior art.