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US2573801A
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Assignee: Philips North America LLC
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Filing: 1946-09-20
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Granted: 1951-11-06
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Expires: 1966-09-20
Abstract
No abstract record available.
Inventors
- 👤 Donald H Mills
- 👤 Norman F Martin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 13:30
CPC Classifications
H; H03; H03J; H03J5/00; H03J5/02; H03J5/04; H03J5/12
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1925651A
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US1960103A
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US2151595A
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US2153865A
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US2278648A
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US2351443A
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US2330833A
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US2214506A
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US2372099A
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US2366573A
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US2350543A
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US2383338A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-11-05 | 1955-05-07 | 1955-11-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-11-05 | 1959-05-07 | 1959-11-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-11-05 | 1963-05-07 | 1963-11-06 | $7700.00 | Window Closed / Lapsed |