US3476561A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Photoetch method
Assignee: International Business Machines Corp
•
Filing: 1965-08-30
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Granted: 1969-11-04
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Expires: 1985-08-30
Abstract
No abstract record available.
Inventors
- 👤 Bruce I Bertelsen
- 👤 Arnold E Reimer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 20:34
CPC Classifications
G; G11; G11C; G11C11/00; G11C11/02; G11C11/06; G11C11/06085; C; C23; C23F; C23F1/00; C23F1/02; G03; G03F; G03F7/00; G03F7/004; G03F7/09; G03F7/095; G03F7/20; G03F7/2022; H; H05; H05K; H05K3/00; H05K3/02; H05K3/06; H05K3/061; H05K3/064; H05K2203/00; H05K2203/05; H05K2203/0502; H05K2203/0505; H05K2203/0562; H05K2203/0577
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US3317320A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-11-03 | 1973-05-05 | 1973-11-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-11-03 | 1977-05-05 | 1977-11-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-11-03 | 1981-05-05 | 1981-11-04 | $7700.00 | Window Closed / Lapsed |