Patent US3315069A successfully refreshed from Google Patents.
US3315069A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Computer having four-function arithmetic unit
Assignee: Telefunken Patentverwertungs GmbH
•
Filing: 1964-06-29
•
Granted: 1967-04-18
•
Expires: 1984-06-29
Abstract
No abstract record available.
Inventors
- 👤 Bohm Wolfgang
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 09:23
CPC Classifications
G; G06; G06F; G06F7/00; G06F7/38; G06F7/48; G06F7/57; G06F7/499; G06F7/49936
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
38 words
AN ELECTRONIC FOUR-FUNCTION ARITHMETIC UNIT HAVING REGISTERS FOR CONTAINING IN BINARY FORM NUMBERS TO BE CALCULATED, COMPRISING, IN COMBINATION: FOUR REGISTERS A, B, C, D; CIRCUIT CONTROL MEANS CONNECTED TO THE REGISTERS FOR CARRYING OUT THE ARITHMETIC STEP
Claim 2
Dependent Claim
38 words
AN ELECTRONIC FOUR-FUNCTION ARITHMETIC UNIT HAVING REGISTERS FOR CONTAINING IN BINARY FORM NUMBERS TO BE CALCULATED, COMPRISING, IN COMBINATION: FOUR REGISTERS A, B, C, D; CIRCUIT CONTROL MEANS CONNECTED TO THE REGISTERS FOR CARRYING OUT THE ARITHMETIC STEP
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) | 1970-04-17 | 1970-10-17 | 1971-04-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-04-17 | 1974-10-17 | 1975-04-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-04-17 | 1978-10-17 | 1979-04-18 | $7700.00 | Window Closed / Lapsed |