GB1584645A - Microcomputer control apparatus for a machine tool - Google Patents
Microcomputer control apparatus for a machine tool Download PDFInfo
- Publication number
- GB1584645A GB1584645A GB2789577A GB2789577A GB1584645A GB 1584645 A GB1584645 A GB 1584645A GB 2789577 A GB2789577 A GB 2789577A GB 2789577 A GB2789577 A GB 2789577A GB 1584645 A GB1584645 A GB 1584645A
- Authority
- GB
- United Kingdom
- Prior art keywords
- program
- tool
- control
- data block
- workpiece
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
- 230000033001 locomotion Effects 0.000 claims description 30
- 238000003801 milling Methods 0.000 claims description 24
- 238000000034 method Methods 0.000 claims description 13
- 238000013479 data entry Methods 0.000 claims description 8
- 230000004044 response Effects 0.000 claims description 6
- 230000001419 dependent effect Effects 0.000 claims description 5
- 238000003754 machining Methods 0.000 claims description 5
- 238000005553 drilling Methods 0.000 claims description 4
- 238000012546 transfer Methods 0.000 claims description 3
- 238000012937 correction Methods 0.000 claims description 2
- 238000006073 displacement reaction Methods 0.000 claims description 2
- 239000003415 peat Substances 0.000 claims description 2
- 238000012545 processing Methods 0.000 claims description 2
- 230000003252 repetitive effect Effects 0.000 claims 3
- 230000006870 function Effects 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 230000006835 compression Effects 0.000 description 3
- 238000007906 compression Methods 0.000 description 3
- 230000000881 depressing effect Effects 0.000 description 3
- 230000000994 depressogenic effect Effects 0.000 description 3
- 230000008859 change Effects 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000002093 peripheral effect Effects 0.000 description 2
- 230000000717 retained effect Effects 0.000 description 2
- YSGQGNQWBLYHPE-CFUSNLFHSA-N (7r,8r,9s,10r,13s,14s,17s)-17-hydroxy-7,13-dimethyl-2,6,7,8,9,10,11,12,14,15,16,17-dodecahydro-1h-cyclopenta[a]phenanthren-3-one Chemical compound C1C[C@]2(C)[C@@H](O)CC[C@H]2[C@@H]2[C@H](C)CC3=CC(=O)CC[C@@H]3[C@H]21 YSGQGNQWBLYHPE-CFUSNLFHSA-N 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 230000003321 amplification Effects 0.000 description 1
- 230000000712 assembly Effects 0.000 description 1
- 238000000429 assembly Methods 0.000 description 1
- 239000002826 coolant Substances 0.000 description 1
- 230000001934 delay Effects 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- PWPJGUXAGUPAHP-UHFFFAOYSA-N lufenuron Chemical compound C1=C(Cl)C(OC(F)(F)C(C(F)(F)F)F)=CC(Cl)=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F PWPJGUXAGUPAHP-UHFFFAOYSA-N 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000003550 marker Substances 0.000 description 1
- 230000013011 mating Effects 0.000 description 1
- 238000005555 metalworking Methods 0.000 description 1
- 238000003199 nucleic acid amplification method Methods 0.000 description 1
- 230000020347 spindle assembly Effects 0.000 description 1
Classifications
-
- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B19/00—Programme-control systems
- G05B19/02—Programme-control systems electric
- G05B19/18—Numerical control [NC], i.e. automatically operating machines, in particular machine tools, e.g. in a manufacturing environment, so as to execute positioning, movement or co-ordinated operations by means of programme data in numerical form
- G05B19/414—Structure of the control system, e.g. common controller or multiprocessor systems, interface to servo, programmable interface controller
- G05B19/4142—Structure of the control system, e.g. common controller or multiprocessor systems, interface to servo, programmable interface controller characterised by the use of a microprocessor
-
- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B2219/00—Program-control systems
- G05B2219/30—Nc systems
- G05B2219/34—Director, elements to supervisory
- G05B2219/34034—Multiplier, prm, brm
-
- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B2219/00—Program-control systems
- G05B2219/30—Nc systems
- G05B2219/34—Director, elements to supervisory
- G05B2219/34215—Microprocessor
-
- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B2219/00—Program-control systems
- G05B2219/30—Nc systems
- G05B2219/34—Director, elements to supervisory
- G05B2219/34237—Multiplexed d-a a-d
-
- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B2219/00—Program-control systems
- G05B2219/30—Nc systems
- G05B2219/35—Nc in input of data, input till input file format
- G05B2219/35431—Interactive
-
- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B2219/00—Program-control systems
- G05B2219/30—Nc systems
- G05B2219/35—Nc in input of data, input till input file format
- G05B2219/35447—Potentiometer
-
- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B2219/00—Program-control systems
- G05B2219/30—Nc systems
- G05B2219/35—Nc in input of data, input till input file format
- G05B2219/35481—Display, panel
-
- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B2219/00—Program-control systems
- G05B2219/30—Nc systems
- G05B2219/35—Nc in input of data, input till input file format
- G05B2219/35556—Conversion inch to metric
-
- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B2219/00—Program-control systems
- G05B2219/30—Nc systems
- G05B2219/36—Nc in input of data, input key till input tape
- G05B2219/36111—Local memory instead of tape, or combined
-
- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B2219/00—Program-control systems
- G05B2219/30—Nc systems
- G05B2219/36—Nc in input of data, input key till input tape
- G05B2219/36117—Magnetic tape cassette
-
- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B2219/00—Program-control systems
- G05B2219/30—Nc systems
- G05B2219/36—Nc in input of data, input key till input tape
- G05B2219/36162—Pendant control box
-
- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B2219/00—Program-control systems
- G05B2219/30—Nc systems
- G05B2219/36—Nc in input of data, input key till input tape
- G05B2219/36557—Copy entered program in memory to tape
-
- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B2219/00—Program-control systems
- G05B2219/30—Nc systems
- G05B2219/37—Measurements
- G05B2219/37092—Display position actual and or target
-
- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B2219/00—Program-control systems
- G05B2219/30—Nc systems
- G05B2219/37—Measurements
- G05B2219/37154—Encoder and absolute position counter
-
- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B2219/00—Program-control systems
- G05B2219/30—Nc systems
- G05B2219/41—Servomotor, servo controller till figures
- G05B2219/41036—Position error in memory, lookup table for correction actual position
-
- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B2219/00—Program-control systems
- G05B2219/30—Nc systems
- G05B2219/41—Servomotor, servo controller till figures
- G05B2219/41047—Recirculating ballnut, ballscrew, preloaded bearing
-
- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B2219/00—Program-control systems
- G05B2219/30—Nc systems
- G05B2219/43—Speed, acceleration, deceleration control ADC
- G05B2219/43158—Feedrate override
-
- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B2219/00—Program-control systems
- G05B2219/30—Nc systems
- G05B2219/43—Speed, acceleration, deceleration control ADC
- G05B2219/43159—Feedrate override only for x y, not for z or only for z and not for x y
-
- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B2219/00—Program-control systems
- G05B2219/30—Nc systems
- G05B2219/43—Speed, acceleration, deceleration control ADC
- G05B2219/43161—Second, independent feedrate override
-
- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B2219/00—Program-control systems
- G05B2219/30—Nc systems
- G05B2219/49—Nc machine tool, till multiple
- G05B2219/49395—Repeating same operations for other coordinates
-
- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B2219/00—Program-control systems
- G05B2219/30—Nc systems
- G05B2219/50—Machine tool, machine tool null till machine tool work handling
- G05B2219/50031—Zero setting, go to reference with gauge
-
- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B2219/00—Program-control systems
- G05B2219/30—Nc systems
- G05B2219/50—Machine tool, machine tool null till machine tool work handling
- G05B2219/50294—Tool offset length by going to a reference and recording distance
Landscapes
- Engineering & Computer Science (AREA)
- Computer Hardware Design (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Human Computer Interaction (AREA)
- Manufacturing & Machinery (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Automation & Control Theory (AREA)
- Numerical Control (AREA)
- Input From Keyboards Or The Like (AREA)
- Control Of Position Or Direction (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US70256976A | 1976-07-06 | 1976-07-06 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1584645A true GB1584645A (en) | 1981-02-18 |
Family
ID=24821762
Family Applications (3)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB2789577A Expired GB1584645A (en) | 1976-07-06 | 1977-07-04 | Microcomputer control apparatus for a machine tool |
| GB2456379A Expired GB1584646A (en) | 1976-07-06 | 1977-07-04 | Machine tool apparatus |
| GB2456479A Expired GB1584647A (en) | 1976-07-06 | 1977-07-04 | Controlled machine tool |
Family Applications After (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB2456379A Expired GB1584646A (en) | 1976-07-06 | 1977-07-04 | Machine tool apparatus |
| GB2456479A Expired GB1584647A (en) | 1976-07-06 | 1977-07-04 | Controlled machine tool |
Country Status (7)
| Country | Link |
|---|---|
| JP (2) | JPS536784A (enrdf_load_stackoverflow) |
| CA (1) | CA1102434A (enrdf_load_stackoverflow) |
| CH (1) | CH618528A5 (enrdf_load_stackoverflow) |
| DE (1) | DE2730335A1 (enrdf_load_stackoverflow) |
| FR (1) | FR2357943A1 (enrdf_load_stackoverflow) |
| GB (3) | GB1584645A (enrdf_load_stackoverflow) |
| IT (1) | IT1079960B (enrdf_load_stackoverflow) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4539634A (en) * | 1982-02-02 | 1985-09-03 | Yamazaki Machiner Works, Ltd. | Modification of machining program in a numerical control machine tool |
| CN114161154A (zh) * | 2021-12-07 | 2022-03-11 | 安徽机电职业技术学院 | 一种数控机床的智能调节模组 |
Families Citing this family (25)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5518383A (en) * | 1978-07-28 | 1980-02-08 | Toyoda Mach Works Ltd | Numerical controller for controlling grinding |
| JPS55143606A (en) * | 1979-04-26 | 1980-11-10 | Mitsubishi Electric Corp | Process controller |
| JPS55143607A (en) * | 1979-04-26 | 1980-11-10 | Mitsubishi Electric Corp | Process controller |
| JPS5650405A (en) * | 1979-10-02 | 1981-05-07 | Matsushita Electric Ind Co Ltd | Control unit of machine tool |
| DE2929545A1 (de) * | 1979-07-20 | 1981-01-29 | Heidenhain Gmbh Dr Johannes | Verfahren und schaltungsanordnung zur programmerstellung und/oder programmaenderung bei numerisch gesteuerten maschinen |
| JPS5719809A (en) * | 1980-07-10 | 1982-02-02 | Fanuc Ltd | Numerical control information generating system |
| DE3028708A1 (de) * | 1980-07-29 | 1982-02-11 | Dr. Johannes Heidenhain Gmbh, 8225 Traunreut | Verfahren zur programmierung bahngesteuerter maschinen |
| JPS5729105A (en) * | 1980-07-30 | 1982-02-17 | Mitsubishi Electric Corp | Forming system for sewing data of automatic sewing machine |
| JPS5729104A (en) * | 1980-07-30 | 1982-02-17 | Mitsubishi Electric Corp | Forming system for sewing data of automatic sewing machine |
| JPS5760408A (en) * | 1980-09-30 | 1982-04-12 | Okuma Mach Works Ltd | Numerical control system capable of controlling external interruption |
| JPS5779508A (en) * | 1980-10-31 | 1982-05-18 | Mitsubishi Electric Corp | Numeric controller |
| JPS57169813A (en) * | 1981-04-13 | 1982-10-19 | Mitsubishi Electric Corp | Numerical controller |
| JPS57211604A (en) * | 1981-06-22 | 1982-12-25 | Fanuc Ltd | Numerical controlling method |
| JPS5819908A (ja) * | 1981-07-28 | 1983-02-05 | Mitsubishi Electric Corp | 数値制御装置 |
| JPS5846409A (ja) * | 1981-09-14 | 1983-03-17 | Yamazaki Mazak Corp | マシニングセンタにおける加工情報の入力方法 |
| JPS57114362A (en) * | 1981-11-07 | 1982-07-16 | Toyoda Mach Works Ltd | Control parameter input method in numerical control for machine tool |
| JPS57114361A (en) * | 1981-11-07 | 1982-07-16 | Toyoda Mach Works Ltd | Numerical control for machine tool |
| JPS58163007A (ja) * | 1982-03-24 | 1983-09-27 | Fanuc Ltd | 携帯型ｎｃ自動プログラミング装置 |
| JPS5962947A (ja) * | 1982-10-01 | 1984-04-10 | Fanuc Ltd | 数値制御方式 |
| JPS62228159A (ja) * | 1985-12-26 | 1987-10-07 | Kagakuhin Kensa Kyokai | ガスクロマトグラフ用カラム |
| JPS632642A (ja) * | 1986-06-19 | 1988-01-07 | Mitsubishi Electric Corp | 数値制御装置 |
| US5453933A (en) * | 1993-09-08 | 1995-09-26 | Hurco Companies, Inc. | CNC control system |
| CN103394814B (zh) * | 2013-08-01 | 2015-05-13 | 江苏大德重工有限公司 | 激光切割机z轴电容调高系统 |
| CN104875075A (zh) * | 2015-06-03 | 2015-09-02 | 安徽圣力达电器有限公司 | 锯床快速下降定位锯分系统 |
| CN105499668A (zh) * | 2016-01-13 | 2016-04-20 | 高碧 | 一种数控自动化铣床 |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1189958A (en) * | 1965-09-03 | 1970-04-29 | Olivetti & Co Spa | A Numerical Control Device |
| US3668653A (en) * | 1968-10-22 | 1972-06-06 | Sundstrad Corp | Control system |
| US3746845A (en) * | 1970-08-06 | 1973-07-17 | Bendix Corp | Numerical control system |
| GB1369193A (en) * | 1970-08-17 | 1974-10-02 | Doall Co | Numerical control system for machine tools |
| US3821525A (en) * | 1972-03-16 | 1974-06-28 | Conrac Corp | Method and apparatus for automatically compensated tube bending |
| JPS5113083A (en) * | 1974-07-22 | 1976-02-02 | Tokyo Shibaura Electric Co | Taiwagata nc sochi |
-
1977
- 1977-06-21 CA CA281,097A patent/CA1102434A/en not_active Expired
- 1977-06-28 IT IT5003377A patent/IT1079960B/it active
- 1977-06-28 FR FR7719857A patent/FR2357943A1/fr active Granted
- 1977-07-04 GB GB2789577A patent/GB1584645A/en not_active Expired
- 1977-07-04 GB GB2456379A patent/GB1584646A/en not_active Expired
- 1977-07-04 GB GB2456479A patent/GB1584647A/en not_active Expired
- 1977-07-05 DE DE19772730335 patent/DE2730335A1/de not_active Withdrawn
- 1977-07-05 JP JP8035577A patent/JPS536784A/ja active Granted
- 1977-07-06 CH CH834377A patent/CH618528A5/fr not_active IP Right Cessation
-
1984
- 1984-09-17 JP JP19455684A patent/JPS60186907A/ja active Granted
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4539634A (en) * | 1982-02-02 | 1985-09-03 | Yamazaki Machiner Works, Ltd. | Modification of machining program in a numerical control machine tool |
| CN114161154A (zh) * | 2021-12-07 | 2022-03-11 | 安徽机电职业技术学院 | 一种数控机床的智能调节模组 |
Also Published As
| Publication number | Publication date |
|---|---|
| FR2357943A1 (fr) | 1978-02-03 |
| GB1584647A (en) | 1981-02-18 |
| JPS60186907A (ja) | 1985-09-24 |
| IT1079960B (it) | 1985-05-16 |
| JPS6145248B2 (enrdf_load_stackoverflow) | 1986-10-07 |
| DE2730335A1 (de) | 1978-01-12 |
| FR2357943B3 (enrdf_load_stackoverflow) | 1980-04-04 |
| GB1584646A (en) | 1981-02-18 |
| CH618528A5 (en) | 1980-07-31 |
| JPS6142289B2 (enrdf_load_stackoverflow) | 1986-09-20 |
| CA1102434A (en) | 1981-06-02 |
| JPS536784A (en) | 1978-01-21 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PS | Patent sealed | ||
| PCNP | Patent ceased through non-payment of renewal fee |