| 54 |
Title |
TI |
[EN] Improvements in Balances and Balance-springs for Watch, Clock, and like Escapements. |
| 71/73 |
Applicant/owner |
PA |
PERRET PAUL, CH
|
| 72 |
Inventor |
IN |
PERRET PAUL, CH
|
| 22/96 |
Application date |
AD |
May 24, 1898 |
| 21 |
Application number |
AN |
|
|
Country of application |
AC |
GB |
|
Publication date |
PUB |
Jul 2, 1898 |
33
31
32 |
Priority data |
PRC
PRN
PRD |
GB
null
18980524
|
| 51 |
IPC main class |
ICM |
|
| 51 |
IPC secondary class |
ICS |
|
|
IPC additional class |
ICA |
|
|
IPC index class |
ICI |
|
|
Cooperative patent classification |
CPC |
|
|
MCD main class |
MCM |
|
|
MCD secondary class |
MCS |
|
|
MCD additional class |
MCA |
|
| 57 |
Abstract |
AB |
[EN] 11,825. Perret, P. May 24. Balances are made of alloys composed of 35 to 36 parts of nickel and 65 to 69 parts of steel. Balance springs are made of an alloy of nickel and steel wherein the proportion of nickel is between 38 and 45 per cent. |
| 56 |
Cited documents identified in the search |
CT |
|
| 56 |
Cited documents indicated by the applicant |
CT |
|
| 56 |
Cited non-patent literature identified in the search |
CTNP |
|
| 56 |
Cited non-patent literature indicated by the applicant |
CTNP |
|
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Citing documents |
|
Determine documents
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Sequence listings |
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Search file IPC |
ICP |
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