Patent US2950219A successfully refreshed from Google Patents.
US2950219A
Expired / Lapsed
US
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Method of manufacturing semiconductor crystals
Assignee: Rauland Borg Corp
•
Filing: 1955-02-23
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Granted: 1960-08-23
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Expires: 1975-02-23
Abstract
No abstract record available.
Inventors
- 👤 Robert G Pohl
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 19:38
CPC Classifications
C; C30; C30B; C30B15/00; C30B15/30; C30B15/305; Y; Y10; Y10S; Y10S438/00; Y10S438/914; Y10S438/925
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2727840A
Cited
US2730470A
Cited
FR1065523A
Cited
US2689930A
Cited
US2743200A
Cited
US2835614A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-08-23 | 1964-02-22 | 1964-08-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-08-23 | 1968-02-22 | 1968-08-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-08-23 | 1972-02-22 | 1972-08-23 | $7700.00 | Window Closed / Lapsed |