Patent US2572106A successfully refreshed from Google Patents.
US2572106A
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US
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Valve rotating device
Assignee: Motors Liquidation Co
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Filing: 1949-12-01
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Granted: 1951-10-23
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Expires: 1969-12-01
Abstract
No abstract record available.
Inventors
- 👤 Frank C Burrell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 23:54
CPC Classifications
F; F01; F01L; F01L1/00; F01L1/32; F16; F16K; F16K29/00; Y; Y10; Y10T; Y10T74/00; Y10T74/18; Y10T74/18888; Y10T74/1892; Y10T74/20; Y10T74/20576; Y10T74/20582
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-10-22 | 1955-04-23 | 1955-10-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-10-22 | 1959-04-23 | 1959-10-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-10-22 | 1963-04-23 | 1963-10-23 | $7700.00 | Window Closed / Lapsed |