US3475748A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Gain stabilization device
Assignee: ERNEST W FISCHER JR
•
Filing: 1965-08-09
•
Granted: 1969-10-28
•
Expires: 1985-08-09
Abstract
No abstract record available.
Inventors
- 👤 Robert J Price
- 👤 Ernest W Fischer Jr
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 14:44
CPC Classifications
H; H03; H03M; H03M1/00; H03G; H03G3/00; H03G3/20; H03G3/30; H03G3/3005; H03G3/301; H03G3/3015; H03M1/12; H03M1/50
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2940071A
Cited
US2987486A
Cited
US3070786A
Cited
US3142834A
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US3042911A
Cited
US3267458A
Cited
US3287723A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-10-27 | 1973-04-28 | 1973-10-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-10-27 | 1977-04-28 | 1977-10-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-10-27 | 1981-04-28 | 1981-10-28 | $7700.00 | Window Closed / Lapsed |