US3014172A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Transistorized inverters
Assignee: Boeing Co
•
Filing: 1957-03-18
•
Granted: 1961-12-19
•
Expires: 1977-03-18
Abstract
No abstract record available.
Inventors
- 👤 Ralph A Brunson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 05:12
CPC Classifications
H; H02; H02M; H02M3/00; H02M3/22; H02M3/24; H02M3/28; H02M3/325; H02M3/335; H02M3/338; H02M3/3382; H02M3/3384
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2763734A
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US2662199A
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US2728857A
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US2783384A
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US2821639A
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US2821657A
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US2748274A
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US2774878A
Cited
US2891195A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-12-18 | 1965-06-19 | 1965-12-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-12-18 | 1969-06-19 | 1969-12-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-12-18 | 1973-06-19 | 1973-12-19 | $7700.00 | Window Closed / Lapsed |