US2934649A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Induction charging
Assignee: Xerox Corp
•
Filing: 1957-01-09
•
Granted: 1960-04-26
•
Expires: 1977-01-09
Abstract
No abstract record available.
Inventors
- 👤 Lewis E Walkup
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 18:42
CPC Classifications
G; G03; G03G; G03G15/00; G03G15/02; G03G15/0208; Y; Y10; Y10S; Y10S101/00; Y10S101/37; Y10S430/00; Y10S430/001; Y10S430/102
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2221776A
Cited
US2297691A
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US2558900A
Cited
US2693416A
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US2701764A
Cited
US2845348A
Cited
US2825814A
Cited
US2833648A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-04-26 | 1963-10-26 | 1964-04-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-04-26 | 1967-10-26 | 1968-04-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-04-26 | 1971-10-26 | 1972-04-26 | $7700.00 | Window Closed / Lapsed |