US2701310A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Oscillatory high-voltage supply
Assignee: Allen B du Mont Laboratories Inc
•
Filing: 1949-01-12
•
Granted: 1955-02-01
•
Expires: 1969-01-12
Abstract
No abstract record available.
Inventors
- 👤 George D Hulst
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 20:52
CPC Classifications
H; H02; H02M; H02M3/00; H02M3/22; H02M3/24; H02M3/28; H02M3/325; H02M3/33
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1628806A
Cited
US1706837A
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US1723485A
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FR687804A
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US1992100A
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US2147746A
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FR822535A
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US2218764A
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US2265620A
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US2267884A
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US2329810A
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US2352166A
Cited
US2438197A
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US2467124A
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US2438359A
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US2546591A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1958-01-31 | 1958-08-02 | 1959-02-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-01-31 | 1962-08-02 | 1963-02-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-01-31 | 1966-08-02 | 1967-02-01 | $7700.00 | Window Closed / Lapsed |