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Browse by Date |
| Patent Number |
Title Of Patent |
Date Issued |
| 4213027 |
Method of treating electrodes intended for operation in argon as cathodes of an electric arc |
Jul. 15, 1980 |
| 4213026 |
Age hardenable nickel superalloy welding wires containing manganese |
Jul. 15, 1980 |
| 4213025 |
Apparatus for connecting metallic parts by means of arc fusion welding |
Jul. 15, 1980 |
| 4213024 |
Butt welding process |
Jul. 15, 1980 |
| 4213023 |
High frequency energy apparatus with automatic heating cycle control |
Jul. 15, 1980 |
| 4213022 |
Two-pressure type circuit interrupter |
Jul. 15, 1980 |
| 4213021 |
Indicating check valve |
Jul. 15, 1980 |
| 4213020 |
Pneumatic operating mechanism for a circuit-breaker |
Jul. 15, 1980 |
| 4213019 |
Overhead door cable safety device |
Jul. 15, 1980 |
| 4213018 |
Explosion-proof contact assembly and method of forming the same |
Jul. 15, 1980 |
| 4213017 |
Multiple switch assembly with detent and interlock |
Jul. 15, 1980 |
| 4213016 |
Arrangement for measuring the line condition of a subscriber's line circuit by means of a measur... |
Jul. 15, 1980 |
| 4213015 |
Failure alarm for a transmission line communications system |
Jul. 15, 1980 |
| 4213014 |
Half echo-suppressor for a four-wire telephone line |
Jul. 15, 1980 |
| 4213013 |
Telephone network/subscriber interface device |
Jul. 15, 1980 |
| 4213012 |
Discriminating means for telephone circuits |
Jul. 15, 1980 |
| 4213011 |
Process for T.D.M. frame synchronization employing variable synchronizing words |
Jul. 15, 1980 |
| 4213010 |
Fail-safe mechanisms for a telephone answering device |
Jul. 15, 1980 |
| 4213009 |
System of connecting a wire telecommunication and a radio communication |
Jul. 15, 1980 |
| 4213008 |
Loudspeaker enclosure for mid-wall location |
Jul. 15, 1980 |
| 4213007 |
Method and apparatus for monitoring a pulse-code modulated data transmission |
Jul. 15, 1980 |
| 4213006 |
Circuit arrangement for the coarse synchronization of carrier signals and pulse signals with dat... |
Jul. 15, 1980 |
| 4213005 |
Digitizer tablet |
Jul. 15, 1980 |
| 4213004 |
Hermetic electrical feedthrough for aluminum housing and method of making same |
Jul. 15, 1980 |
| 4213003 |
Bus conduit electrical distribution system |
Jul. 15, 1980 |
| 4213002 |
Electrically heated melting furnace for mineral materials |
Jul. 15, 1980 |
| 4213001 |
Oligomerizing alpha-olefins with a heterogeneous catalyst |
Jul. 15, 1980 |
| 4213000 |
Reducing color formers in 1,4-butanediol |
Jul. 15, 1980 |
| 4212999 |
1-Phenyl-3-(3-trifluoromethylphenyl)-1,2-propane diol and process for its production |
Jul. 15, 1980 |
| 4212998 |
1-Phenyl-3-(3-trifluoromethylphenyl)-2-propanol and process for its production |
Jul. 15, 1980 |
| 4212997 |
Process for recovering 2,2-bis(4-hydroxyphenyl)propane from an adduct of 2,2-bis(4-hydroxyphenyl... |
Jul. 15, 1980 |
| 4212996 |
Process for the side-chain chlorination of perhalogenated methyl aromatic compounds |
Jul. 15, 1980 |
| 4212995 |
Process for treatment by liquid cyclone for production of terephthalic acid suspension having re... |
Jul. 15, 1980 |
| 4212994 |
Process for the preparation of carboxylic acid |
Jul. 15, 1980 |
| 4212993 |
16-Substituted prostaglandins |
Jul. 15, 1980 |
| 4212992 |
Fire retardants |
Jul. 15, 1980 |
| 4212991 |
Single-stage process for the preparation of terephthalic acid |
Jul. 15, 1980 |
| 4212990 |
Method for producing cyclohexane derivatives directly from aromatic hydrocarbons |
Jul. 15, 1980 |
| 4212989 |
Process for producing carboxylic acids or esters thereof |
Jul. 15, 1980 |
| 4212988 |
Preparation of 2-ketogulonic acid |
Jul. 15, 1980 |
| 4212987 |
2,2-Difluoro-PGE.sub.1 analogs |
Jul. 15, 1980 |
| 4212986 |
2,2-Difluoro-PGE.sub.2 analogs |
Jul. 15, 1980 |
| 4212985 |
cis-4,5-Didehydro-16-phenoxy-PGE.sub.1 compounds |
Jul. 15, 1980 |
| 4212984 |
Prostaglandin precursors |
Jul. 15, 1980 |
| 4212983 |
Manufacture of imidazoline compounds |
Jul. 15, 1980 |
| 4212982 |
Polyisocyanates with at least one hydantoin or thiohydantoin ring substituted by carboxylic acid... |
Jul. 15, 1980 |
| 4212981 |
Process for preparing 3-isoxazolylurea derivatives |
Jul. 15, 1980 |
| 4212980 |
5-Phenoxy-2-pyridinecarbonitrile compounds and methods for their production |
Jul. 15, 1980 |
| 4212979 |
2-Substituted benzisothiazolones |
Jul. 15, 1980 |
| 4212978 |
Process for the catalytic production of 2-substituted pyridines |
Jul. 15, 1980 |
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