US3239816A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Computer indexing system
Assignee: Unisys Corp
•
Filing: 1960-07-25
•
Granted: 1966-03-08
•
Expires: 1980-07-25
Abstract
No abstract record available.
Inventors
- 👤 Mary A Breslin
- 👤 Moore Mary Louise
- 👤 William F Schmitt
- 👤 Margaret K Turanski
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 23:21
CPC Classifications
G; G06; G06F; G06F9/00; G06F9/06; G06F9/30; G06F9/34; G06F9/355
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
58 words
A STORED PROGRAM DIGITAL COMPUTER COMPRISING A MEMORY FOR STORING INSTRUCTIONS AND OPERANDS, MEANS FOR SELECTING SAID INSTRUCTIONS IN A PREDETERMINED SEQUENCE, CIRCUITS FOR MANIPULATING SAID OPERANDS IN RESPONSE TO SAID INSTRUCTIONS, AT LEAST ONE REGISTER FOR STORING OPERANDS CAPABLE OF MODIFYING SAID INSTRUCTIONS, MEANS TO EFFECT A DIRECT ALTERATION OF ONE PORTION OF THE CONTENTS OF SAID
Claim 2
Dependent Claim
58 words
A STORED PROGRAM DIGITAL COMPUTER COMPRISING A MEMORY FOR STORING INSTRUCTIONS AND OPERANDS, MEANS FOR SELECTING SAID INSTRUCTIONS IN A PREDETERMINED SEQUENCE, CIRCUITS FOR MANIPULATING SAID OPERANDS IN RESPONSE TO SAID INSTRUCTIONS, AT LEAST ONE REGISTER FOR STORING OPERANDS CAPABLE OF MODIFYING SAID INSTRUCTIONS, MEANS TO EFFECT A DIRECT ALTERATION OF ONE PORTION OF THE CONTENTS OF SAID
References Cited (Backward Citations)
US2810516A
Cited
US2800277A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-03-07 | 1969-09-06 | 1970-03-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-03-07 | 1973-09-06 | 1974-03-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-03-07 | 1977-09-06 | 1978-03-08 | $7700.00 | Window Closed / Lapsed |