Patent US2851620A successfully refreshed from Google Patents.
US2851620A
Expired / Lapsed
US
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Step-by-step motor for positioning television antennae
Assignee: Commonwealth Engineering Company of Ohio
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Filing: 1955-08-04
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Granted: 1958-09-09
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Expires: 1975-08-04
Abstract
No abstract record available.
Inventors
- 👤 Dietrich K Hausen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 14:37
CPC Classifications
H; H01; H01Q; H01Q3/00; H01Q3/005
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US608246A
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US1306410A
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US1058545A
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US1756823A
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US1653946A
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US2286406A
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US2424843A
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US2611799A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-09-08 | 1962-03-10 | 1962-09-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-09-08 | 1966-03-10 | 1966-09-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-09-08 | 1970-03-10 | 1970-09-09 | $7700.00 | Window Closed / Lapsed |