US3337375A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Semiconductor method and device
Assignee: Sprague Electric Co
•
Filing: 1964-06-24
•
Granted: 1967-08-22
•
Expires: 1984-06-24
Abstract
No abstract record available.
Inventors
- 👤 James J Casey
- 👤 Richard R Garnache
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 07:26
CPC Classifications
C; C23; C23C; C23C16/00; C23C16/06; C23C16/08; H; H10; H10P; H10P95/00; Y; Y10; Y10S; Y10S148/00; Y10S148/003; Y10S148/017; Y10S148/025; Y10S148/049; Y10S148/142
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2745932A
Cited
US2998334A
Cited
US3250966A
Cited
US3121809A
Cited
US3139361A
Cited
US3205101A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-08-21 | 1971-02-20 | 1971-08-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-08-21 | 1975-02-20 | 1975-08-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-08-21 | 1979-02-20 | 1979-08-22 | $7700.00 | Window Closed / Lapsed |