Patent US3461373A successfully refreshed from Google Patents.
US3461373A
Expired / Lapsed
US
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Pulse width modulated inverter
Assignee: Reliance Electric and Engineering Co
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Filing: 1967-03-20
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Granted: 1969-08-12
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Expires: 1987-03-20
Abstract
No abstract record available.
Inventors
- 👤 Boris Mokrytzki
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 15:21
CPC Classifications
H; H03; H03K; H03K5/00; H03K5/01; H02; H02M; H02M7/00; H02M7/42; H02M7/44; H02M7/48; H02M7/505; H02M7/515; H02M7/525; H02M7/527; H03K7/00; H03K7/08
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US3301730A
Cited
US3334292A
Cited
US3321697A
Cited
US3324376A
Cited
US3376490A
Cited
US3319147A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-08-11 | 1973-02-10 | 1973-08-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-08-11 | 1977-02-10 | 1977-08-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-08-11 | 1981-02-10 | 1981-08-12 | $7700.00 | Window Closed / Lapsed |