US2867735A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Bias control circuit
Assignee: GOLDAK Co
•
Filing: 1955-03-07
•
Granted: 1959-01-06
•
Expires: 1975-03-07
Abstract
No abstract record available.
Inventors
- 👤 Edwin N Kaufman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 03:26
CPC Classifications
H; H03; H03G; H03G11/00; H03G11/02; H03G3/00; H03G3/20; H03G3/30; H03G3/34; H03G3/341
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1705993A
Cited
US1853678A
Cited
US1811915A
Cited
US2001622A
Cited
US1969657A
Cited
US2175270A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-01-05 | 1962-07-07 | 1963-01-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-01-05 | 1966-07-07 | 1967-01-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-01-05 | 1970-07-07 | 1971-01-06 | $7700.00 | Window Closed / Lapsed |