US2764643A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Oscillators
Assignee: FRANK H MCINTOSH
•
Filing: 1954-03-23
•
Granted: 1956-09-25
•
Expires: 1974-03-23
Abstract
No abstract record available.
Inventors
- 👤 Peter G Sulzer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 19:50
CPC Classifications
H; H03; H03B; H03B5/00; H03B5/20
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2358428A
Cited
US2394018A
Cited
US2568868A
Cited
US2590282A
Cited
US2661398A
Cited
US2727993A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-09-25 | 1960-03-26 | 1960-09-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-09-25 | 1964-03-26 | 1964-09-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-09-25 | 1968-03-26 | 1968-09-25 | $7700.00 | Window Closed / Lapsed |