Patent US3542608A successfully refreshed from Google Patents.
US3542608A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for stimulating the drift of lithium through germanium crystals
Assignee: Geoscience Instruments Corp
•
Filing: 1968-04-01
•
Granted: 1970-11-24
•
Expires: 1988-04-01
Abstract
No abstract record available.
Inventors
- 👤 Elmer W Jensen
- 👤 Joseph F Thiel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 13:06
CPC Classifications
H; H10; H10P; H10P32/00; H10P32/10; H10P32/185; H10D; H10D99/00
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US3310443A
Cited
US3498852A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-11-23 | 1974-05-25 | 1974-11-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-11-23 | 1978-05-25 | 1978-11-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-11-23 | 1982-05-25 | 1982-11-24 | $7700.00 | Window Closed / Lapsed |