US3457639A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for alignment of microcircuit devices on substrate
Assignee: AT&T Inc
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Filing: 1967-02-16
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Granted: 1969-07-29
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Expires: 1987-02-16
Abstract
No abstract record available.
Inventors
- 👤 Charles W Weller
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 22:23
CPC Classifications
H; H05; H05K; H05K3/00; H05K3/30; H05K3/303; H05K2201/00; H05K2201/09; H05K2201/09818; H05K2201/09909; H05K2201/10; H05K2201/10007; H05K2201/10166; H05K2201/10613; H05K2201/10621; H05K2201/10689; H05K2203/00; H05K2203/16; H05K2203/167; H10; H10W; H10W72/00; H10W72/071; H10W72/072; H10W72/07231; H10W72/07236; Y; Y02; Y02P; Y02P70/00; Y02P70/50; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49002; Y10T29/49117; Y10T29/49121; Y10T29/49124; Y10T29/4913; Y10T29/49133
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) | 1972-07-28 | 1973-01-27 | 1973-07-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-07-28 | 1977-01-27 | 1977-07-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-07-28 | 1981-01-27 | 1981-07-29 | $7700.00 | Window Closed / Lapsed |