Patent US3550133A successfully refreshed from Google Patents.
US3550133A
Expired / Lapsed
US
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Automatic channel apparatus
Assignee: International Business Machines Corp
•
Filing: 1969-01-14
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Granted: 1970-12-22
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Expires: 1989-01-14
Abstract
No abstract record available.
Inventors
- 👤 Lewis E King
- 👤 William C Hoskinson
- 👤 Eugene J Annunziata
- 👤 Francis W Wise
- 👤 Edwin B Pierce
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 20:50
CPC Classifications
G; G06; G06F; G06F13/00; G06F13/10; G06F13/12; G06F13/122; G06F12/00; G06F12/02; G06F12/04
Claims Analysis
Total Claims: 0
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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) | 1973-12-21 | 1974-06-22 | 1974-12-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-12-21 | 1978-06-22 | 1978-12-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-12-21 | 1982-06-22 | 1982-12-22 | $7700.00 | Window Closed / Lapsed |