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Some interesting patents
Posted: Tue Sep 25, 2018 12:27 pm
by Tube_Fan
Re: Some interesting patents
Posted: Fri Sep 28, 2018 1:33 pm
by Tube_Fan
Re: Some interesting patents
Posted: Fri Oct 05, 2018 1:15 pm
by Tube_Fan
(Georg same Neumann) and microphone
US 3418436 Unidirectional condenser microphone
https://patents.google.com/patent/US341 ... oq=3418436
US 3207848 Amplifying circuit for capacitive microphones
https://patents.google.com/patent/US320 ... oq=3207848
GB 420390 Microphone
https://patents.google.com/patent/GB420 ... q=GB420390
https://worldwide.espacenet.com/publica ... 0390A&KC=A#
https://worldwide.espacenet.com/publica ... cale=en_EP#
condenser adj microphone
US 1758777 Condenser microphone
US 1780671 Condenser microphone
US 2024705 Microphone
US 2086107 Condenser microphone
US 2130946 Microphone
US 2179361 Condenser microphone
US 2199432 Condenser microphone
US 2297211 Condenser microphone
US 2387845 Electroacoustic transducer
US 2416557 ELECTRO-ACOUSTIC TRANSDUCER HAVING DAMPING SLOTS
US 2445821 Condenser microphone
US 2579162 Shielded condenser microphone
US 2678967 Capacity microphone with variable directional characteristic
US 2716187 Shielded cable system for microphones and the like
US 3118979 Electrostatic transducer
US 3190972 Condenser microphone
Re: Some interesting patents
Posted: Wed Oct 24, 2018 8:42 am
by Tube_Fan
Re: Some interesting patents
Posted: Thu Nov 01, 2018 11:51 am
by Tube_Fan
Re: Some interesting patents
Posted: Mon Nov 05, 2018 1:55 am
by gellkeller
Is there a doctor in the house?
Re: Some interesting patents
Posted: Thu Nov 08, 2018 12:11 pm
by Tube_Fan
Re: Some interesting patents
Posted: Thu Nov 08, 2018 1:49 pm
by Tube_Fan
Re: Some interesting patents
Posted: Tue Nov 20, 2018 11:41 am
by Tube_Fan
System for transporting grossly asymmetrical objects such as a cluster of grapes or other fruit through a pneumatic tube
https://patents.google.com/patent/US7815401
Re: Some interesting patents
Posted: Wed Nov 28, 2018 6:01 pm
by Tube_Fan
US 5071042 Adapter that provides bottle-like spout for aluminum beverage cans
https://patents.google.com/patent/US507 ... oq=5071042
US 5739758 Sound generating drinking container
https://patents.google.com/patent/US573 ... oq=5739758
Re: Some interesting patents
Posted: Wed Dec 05, 2018 1:23 pm
by Tube_Fan
Re: Some interesting patents
Posted: Mon Mar 04, 2019 10:28 am
by Tube_Fan
Chewing gum formula for enhancing psycho-spirituality
https://patents.google.com/patent/US20120288450
Amphetamine Chewing Gum
https://patents.google.com/patent/US2536168
Method for the extraction of lysergol and ergot alkaloids from plants of the ipomoea genus
https://patents.google.com/patent/US3920663A
Re: Some interesting patents
Posted: Tue May 14, 2019 9:48 am
by Tube_Fan
Devices for delivering a medicament and connector for same
https://patents.google.com/patent/US869 ... oq=8690839
Re: Some interesting patents
Posted: Tue May 14, 2019 10:18 am
by Tube_Fan
The paper patents in Crystal City, Va. before they were all put on computer databases and the paper patents were thrown away.
https://www.flickr.com/photos/62345920@N00/
Patent Place was in a newspaper magazine. It sounds like someone was unhappy with the search business.
Re: Some interesting patents
Posted: Wed Nov 27, 2019 8:08 pm
by Tube_Fan