US3497792A
Expired / Lapsed
US
⏱️ 0.0 years remaining
High voltage to low voltage inverters
Assignee: Westinghouse Electric Corp
•
Filing: 1967-11-20
•
Granted: 1970-02-24
•
Expires: 1987-11-20
Abstract
No abstract record available.
Inventors
- 👤 Peter Mlynar
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 15:01
CPC Classifications
H; H02; H02M; H02M3/00; H02M3/02; H02M3/04; H02M3/06; H02M3/07; H02M7/00; H02M7/42; H02M7/44; H02M7/48; H02M7/505; H02M7/515; H02M7/523; H02M7/53; H02M7/537
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2047463A
Cited
US2219292A
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US2256859A
Cited
US2773200A
Cited
US3418558A
Cited
US3320513A
Cited
US3331008A
Cited
US3337787A
Cited
US3387201A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-02-23 | 1973-08-25 | 1974-02-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-02-23 | 1977-08-25 | 1978-02-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-02-23 | 1981-08-25 | 1982-02-24 | $7700.00 | Window Closed / Lapsed |