US2563302A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Rotor shifter
Assignee: Motors Liquidation Co
•
Filing: 1950-07-08
•
Granted: 1951-08-07
•
Expires: 1970-07-08
Abstract
No abstract record available.
Inventors
- 👤 Robert P Atkinson
- 👤 Joseph N Barney
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 09:23
CPC Classifications
F; F01; F01D; F01D25/00; F01D25/34; F02; F02C; F02C7/00; Y; Y10; Y10T; Y10T74/00; Y10T74/15; Y10T74/1526; Y10T74/1553; Y10T74/1555; Y10T74/1558; Y10T74/1577; Y10T74/1581; Y10T74/1582; Y10T74/18; Y10T74/1856; Y10T74/18856
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
GB191029609A
Cited
CH142790A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-08-06 | 1955-02-05 | 1955-08-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-08-06 | 1959-02-05 | 1959-08-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-08-06 | 1963-02-05 | 1963-08-07 | $7700.00 | Window Closed / Lapsed |