US3212853A
Expired / Lapsed
US
⏱️ 0.0 years remaining
High density silicon
Assignee: General Electric Co
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Filing: 1962-07-30
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Granted: 1965-10-19
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Expires: 1982-07-30
Abstract
No abstract record available.
Inventors
- 👤 Jr Robert H Wentorf
- 👤 Cannon Peter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 20:20
CPC Classifications
H; H01; H01B; H01B1/00; H01B1/04; B; B01; B01J; B01J3/00; B01J3/06; B01J3/065; C; C01; C01B; C01B33/00; C01B33/02; C22; C22C; C22C28/00
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) | 1968-10-18 | 1969-04-19 | 1969-10-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-10-18 | 1973-04-19 | 1973-10-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-10-18 | 1977-04-19 | 1977-10-19 | $7700.00 | Window Closed / Lapsed |