Patent US245628A successfully refreshed from Google Patents.
Patent US3018958A successfully refreshed from Google Patents.
US3018958A
Expired / Lapsed
US
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Very high frequency computing circuit
Assignee: International Business Machines Corp
•
Filing: 1956-08-31
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Granted: 1962-01-30
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Expires: 1976-08-31
Abstract
No abstract record available.
Inventors
- 👤 Robert M Walker
- 👤 Arthur G Anderson
- 👤 Donald E Rosenheim
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 23:45
CPC Classifications
G; G06; G06F; G06F7/00; G06F7/38; G06F7/48; G06F7/52; G06F7/523; G06F7/525
Claims Analysis
Total Claims: 0
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-01-29 | 1965-07-31 | 1966-01-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-01-29 | 1969-07-31 | 1970-01-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-01-29 | 1973-07-31 | 1974-01-30 | $7700.00 | Window Closed / Lapsed |