US3119928A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Components for a combined digitalanalog differential analyzer
Assignee: Individual
•
Filing: 1960-11-29
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Granted: 1964-01-28
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Expires: 1980-11-29
Abstract
No abstract record available.
Inventors
- 👤 Harold K Skramstad
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 02:53
CPC Classifications
G; G06; G06F; G06F7/00; G06F7/60; G06F7/64; G06J; G06J1/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
79 words
IN A SYSTEM FOR SOLVING DIFFERENTIAL EQUATIONS WITH PROBLEM VARIABLES BEING REPRESENTED BY A DIGITAL PART AND AN ANALOG PART, A DIGITAL REGISTER, MEANS FOR CONVERTING THE CONTENTS OF SAID DIGITAL REGISTER TO AN ANALOG SIGNAL, A FIRST ANALOG INTEGRATOR CONNECTED TO THE OUTPUT OF SAID LAST-MENTIONED MEANS, A SECOND ANALOG INTERGRATOR, MEANS FOR APPLYING AN ANALOG SIGNAL TO SAID SECOND ANALOG INTEGRATOR, AND MEANS FOR COMBINING THE MAGNITUDES OF THE OUTPUTS OF SAID FIRST AND SECOND ANALOG INTEGRATOR.
Claim 2
Dependent Claim
79 words
IN A SYSTEM FOR SOLVING DIFFERENTIAL EQUATIONS WITH PROBLEM VARIABLES BEING REPRESENTED BY A DIGITAL PART AND AN ANALOG PART, A DIGITAL REGISTER, MEANS FOR CONVERTING THE CONTENTS OF SAID DIGITAL REGISTER TO AN ANALOG SIGNAL, A FIRST ANALOG INTEGRATOR CONNECTED TO THE OUTPUT OF SAID LAST-MENTIONED MEANS, A SECOND ANALOG INTERGRATOR, MEANS FOR APPLYING AN ANALOG SIGNAL TO SAID SECOND ANALOG INTEGRATOR, AND MEANS FOR COMBINING THE MAGNITUDES OF THE OUTPUTS OF SAID FIRST AND SECOND ANALOG INTEGRATOR.
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) | 1967-01-27 | 1967-07-29 | 1968-01-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-01-27 | 1971-07-29 | 1972-01-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-01-27 | 1975-07-29 | 1976-01-28 | $7700.00 | Window Closed / Lapsed |