US3391348A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Frequency synchronizing system for a swept frequency oscillator
Assignee: International Standard Electric Corp
•
Filing: 1966-07-20
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Granted: 1968-07-02
•
Expires: 1986-07-20
Abstract
No abstract record available.
Inventors
- 👤 Kohler Herbert
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 14:47
CPC Classifications
H; H03; H03B; H03B23/00; H03L; H03L7/00; H03L7/06; H03L7/16; H03L7/20
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2523106A
Cited
US2891157A
Cited
US2884519A
Cited
US3076151A
Cited
US3155919A
Cited
US3259851A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-07-02 | 1972-01-01 | 1972-07-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-07-02 | 1976-01-01 | 1976-07-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-07-02 | 1980-01-01 | 1980-07-02 | $7700.00 | Window Closed / Lapsed |