US3519946A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Class a audio amplifier
Assignee: HANS R CAMEZIND
•
Filing: 1968-09-30
•
Granted: 1970-07-07
•
Expires: 1988-09-30
Abstract
No abstract record available.
Inventors
- 👤 Hans R Camezind
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 05:30
CPC Classifications
H; H03; H03F; H03F3/00; H03F3/181; H03F3/183; H03F3/187
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
GB945109A
Cited
US3089968A
Cited
US3287653A
Cited
US3374411A
Cited
US3436675A
Cited
US3418591A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-07-06 | 1974-01-05 | 1974-07-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-07-06 | 1978-01-05 | 1978-07-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-07-06 | 1982-01-05 | 1982-07-07 | $7700.00 | Window Closed / Lapsed |