US2539786A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Rectifying system
Assignee: Raytheon Co
•
Filing: 1946-05-27
•
Granted: 1951-01-30
•
Expires: 1966-05-27
Abstract
No abstract record available.
Inventors
- 👤 Marcel A Lissman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 12:37
CPC Classifications
H; H02; H02M; H02M7/00; H02M7/02; H02M7/04; H02M7/12; H02M7/145; H02M7/15
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1829254A
Cited
US1874840A
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US2037567A
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US2103996A
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US2085940A
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US2093329A
Cited
US2137126A
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US2288338A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-01-29 | 1954-07-31 | 1955-01-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-01-29 | 1958-07-31 | 1959-01-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-01-29 | 1962-07-31 | 1963-01-30 | $7700.00 | Window Closed / Lapsed |