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US2820207A
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Electric rotary multicontact device
Assignee: Individual
•
Filing: 1954-09-27
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Granted: 1958-01-14
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Expires: 1974-09-27
Abstract
No abstract record available.
Inventors
- 👤 James A S Roy
- 👤 Daniel E Schwartz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 22:28
CPC Classifications
H; H01; H01R; H01R39/00; H01H; H01H19/00; H01H19/54; H01H19/56; H01H19/58
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2231149A
Cited
US2319443A
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US2581266A
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US2751565A
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US2662130A
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US2774831A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-01-13 | 1961-07-15 | 1962-01-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-01-13 | 1965-07-15 | 1966-01-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-01-13 | 1969-07-15 | 1970-01-14 | $7700.00 | Window Closed / Lapsed |