US2816171A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Marking circuit-arrangement for positioning a final selector switch
Assignee: US Philips Corp
•
Filing: 1952-07-05
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Granted: 1957-12-10
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Expires: 1972-07-05
Abstract
No abstract record available.
Inventors
- 👤 Geels Bernardus Hendrikus
- 👤 Nicolai Willem Hendri Johannes
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 09:57
CPC Classifications
H; H04; H04Q; H04Q3/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1799175A
Cited
US1840950A
Cited
US2583014A
Cited
US2593418A
Cited
US2602122A
Cited
US2692617A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-12-09 | 1961-06-10 | 1961-12-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-12-09 | 1965-06-10 | 1965-12-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-12-09 | 1969-06-10 | 1969-12-10 | $7700.00 | Window Closed / Lapsed |