Patent US3105143A successfully refreshed from Google Patents.
US3105143A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Selective comparison apparatus for a digital computer
Assignee: Research Corp
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Filing: 1959-06-30
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Granted: 1963-09-24
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Expires: 1979-06-30
Abstract
No abstract record available.
Inventors
- 👤 William A Hosier
- 👤 Jr Harry S Hoffman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 11:17
CPC Classifications
G; G06; G06F; G06F7/00; G06F7/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
163 words
A DIGITAL COMPUTER ADAPTED TO PROCESS BINARY CODED DATA IN ACCORDANCE WITH A SEQUENTIAL PROGRAM OF INSTRUCTIONS, EACH INSTRUCTION INCLUDING A FIRST GROUP OF BITS IDENTIFYING THE INSTRUCTION AND A SECOND GROUP OF BITS IDENTIFYING A SINGLE MEMORY ADDRESS, COMPRISING A MEMORY FOR STORING BINARY CODED INFORMATION, FIRST AND SECOND REGISTERS ADAPTED TO HOLD BINARY CODED DATA WORDS, MEANS FOR PLACING ONE DATA WORD IN SAID FIRST REGISTER IN COMPLEMENT FORM, MEANS RESPONSIVE TO A COMPARE INSTRUCTION FOR PLACING THE DATA WORD STORED AT THE MEMORY ADDRESS SPECIFIED BY THE INSTRUCTION IN SAID SECOND REGISTER, MEANS OPTIONALLY RESPONSIVE TO SAID COMPARE INSTRUCTION FOR SELECTIVELY MASKING SELECTED, CORRESPONDING ORDERS OF SAID DATA WORDS STORED IN SAID FIRST AND SECOND REGISTERS SO THAT THE VALUES IN SAID CORRESPONDING ORDERS COMPARE PROPERLY IRRESPECTIVE OF THE BINARY VALUES IN THOSE ORDERS OF SAID DATA WORDS, SAID LAST NAMED MEANS INCLUDING MEANS RESPONSIVE TO SAID COMPARE INSTRUCTION TO FORCE THE VALUES IN SELECTED LOCATIONS OF SAID FIRST REGISTER
Claim 2
Dependent Claim
163 words
A DIGITAL COMPUTER ADAPTED TO PROCESS BINARY CODED DATA IN ACCORDANCE WITH A SEQUENTIAL PROGRAM OF INSTRUCTIONS, EACH INSTRUCTION INCLUDING A FIRST GROUP OF BITS IDENTIFYING THE INSTRUCTION AND A SECOND GROUP OF BITS IDENTIFYING A SINGLE MEMORY ADDRESS, COMPRISING A MEMORY FOR STORING BINARY CODED INFORMATION, FIRST AND SECOND REGISTERS ADAPTED TO HOLD BINARY CODED DATA WORDS, MEANS FOR PLACING ONE DATA WORD IN SAID FIRST REGISTER IN COMPLEMENT FORM, MEANS RESPONSIVE TO A COMPARE INSTRUCTION FOR PLACING THE DATA WORD STORED AT THE MEMORY ADDRESS SPECIFIED BY THE INSTRUCTION IN SAID SECOND REGISTER, MEANS OPTIONALLY RESPONSIVE TO SAID COMPARE INSTRUCTION FOR SELECTIVELY MASKING SELECTED, CORRESPONDING ORDERS OF SAID DATA WORDS STORED IN SAID FIRST AND SECOND REGISTERS SO THAT THE VALUES IN SAID CORRESPONDING ORDERS COMPARE PROPERLY IRRESPECTIVE OF THE BINARY VALUES IN THOSE ORDERS OF SAID DATA WORDS, SAID LAST NAMED MEANS INCLUDING MEANS RESPONSIVE TO SAID COMPARE INSTRUCTION TO FORCE THE VALUES IN SELECTED LOCATIONS OF SAID FIRST REGISTER
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-09-23 | 1967-03-25 | 1967-09-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-09-23 | 1971-03-25 | 1971-09-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-09-23 | 1975-03-25 | 1975-09-24 | $7700.00 | Window Closed / Lapsed |