Patent US3500328A successfully refreshed from Google Patents.
US3500328A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Data system microprogramming control
Assignee: International Business Machines Corp
•
Filing: 1966-06-20
•
Granted: 1970-03-10
•
Expires: 1986-06-20
Abstract
No abstract record available.
Inventors
- 👤 Donald E Wallis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 23:29
CPC Classifications
G; G06; G06F; G06F13/00; G06F13/38; G06F13/382; G06F13/387; G06F13/10; G06F13/12; G06F13/122; G06F13/385; G06F9/00; G06F9/06; G06F9/22; G06F9/226
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US2988735A
Cited
US3014654A
Cited
US2985865A
Cited
US3293612A
Cited
US3302181A
Cited
US3312945A
Cited
US3312950A
Cited
US3337855A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-03-09 | 1973-09-08 | 1974-03-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-03-09 | 1977-09-08 | 1978-03-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-03-09 | 1981-09-08 | 1982-03-10 | $7700.00 | Window Closed / Lapsed |