83 replies to this topic

[CATVLineman]

No were not a dying breed cause there will always be cable customers out there some people like up and some dont it all comes down to marketing and the better deal but in the same since the company has to keep that customer happy

[specials]

@lastcenturytel:

Just for the record: It was Michael (Mihajlo) Pupin who invented the load coil, and subsequently sold the patent to AT&T...

http://en.wikipedia...._Idvorski_Pupin

Campbell was just an important step behind...but everyone ended up happy.

Pupin with the dough and Campbell with the ability to continue his research...

[CATVLineman]

Were all foes in this business

[lastcenturytel]

specials, on 30 November 2011 - 07:57 PM, said:

@lastcenturytel:

Just for the record: It was Michael (Mihajlo) Pupin who invented the load coil, and subsequently sold the patent to AT&T...

http://en.wikipedia...._Idvorski_Pupin

Campbell was just an important step behind...but everyone ended up happy.

Pupin with the dough and Campbell with the ability to continue his research...

From your own source:

"Although AT&T bought Pupin's patent, they made little use of it, as they already had their own development in hand led by George Campbell and had up to this point been challenging Pupin with Campbell's own patent. AT&T were afraid they would lose control of an invention which was immensely valuable due to its ability to greatly extend the range of long distance telephones."

And...

"In 1897 Campbell went to work for AT&T in Boston. He developed a method for transmitting analog telephony over much greater distances than had previously been possible by the insertion of loading coils into the line at carefully calculated intervals to increase the inductance. Engineer Michael I. Pupin also patented a similar system and AT&T paid Pupin a very large sum for his patents, so that development would continue without a legal battle. In fact, neither man was the first to suggest the idea of loading coils, that credit goes to Oliver Heaviside in a 1887 article.^[2] Heaviside, however, never patented the idea; indeed, he took no commercial advantage of any of his brilliant work.^[3] Despite the rather arcane legal arguments surrounding this, it is unquestionable that Campbell was the first to actually construct a telephone circuit using loading coils.^[4]"

"AT&T fought a legal battle with Pupin over his claim. Pupin was first to patent but Campbell had already conducted practical demonstrations before Pupin had even filed his patent (December 1899),^[10] Campbell's delay in filing being due to the slow internal machinations of AT&T."

http://en.wikipedia....Ashley_Campbell