Patent US2063471A successfully refreshed from Google Patents.
US2063471A
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Multistage hydraulic coupling
Assignee: Individual
•
Filing: 1933-01-23
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Granted: 1936-12-08
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Expires: 1953-01-23
Abstract
No abstract record available.
Inventors
- 👤 Stedefeld Curt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 12:32
CPC Classifications
F; F16; F16H; F16H47/00; F16H47/06; F16H47/07; Y; Y10; Y10T; Y10T74/00; Y10T74/19; Y10T74/19009; Y10T74/19023; Y10T74/19033; Y10T74/19219; Y10T74/19228; Y10T74/19377; Y10T74/19386; Y10T74/194; Y10T74/19414; Y10T74/1947; Y10T74/19474; Y10T74/19479
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1939-12-08 | 1940-06-08 | 1940-12-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1943-12-08 | 1944-06-08 | 1944-12-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1947-12-08 | 1948-06-08 | 1948-12-08 | $7700.00 | Window Closed / Lapsed |