US2697787A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Alternating current bridge circuits
Assignee: Raytheon Co
•
Filing: 1951-10-30
•
Granted: 1954-12-21
•
Expires: 1971-10-30
Abstract
No abstract record available.
Inventors
- 👤 Malcolm C Vosburgh
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 23:30
CPC Classifications
H; H03; H03L; H03L1/00; H03L1/02
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1590420A
Cited
US2243202A
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US2232390A
Cited
US2457997A
Cited
US2431501A
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US2498103A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-12-20 | 1958-06-21 | 1958-12-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-12-20 | 1962-06-21 | 1962-12-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-12-20 | 1966-06-21 | 1966-12-21 | $7700.00 | Window Closed / Lapsed |