US2214819A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Variable-speed power-transmission mechanism
Assignee: HYDRAULIC COUPLING PATENTS Ltd
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Filing: 1938-12-23
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Granted: 1940-09-17
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Expires: 1958-12-23
Abstract
No abstract record available.
Inventors
- 👤 Kiep Johann Nikolaus
- 👤 Sinclair Harold
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 19:56
CPC Classifications
F; F16; F16D; F16D13/00; F16D13/04; Y; Y10; Y10T; Y10T74/00; Y10T74/19; Y10T74/19149; Y10T74/19158; Y10T74/19219; Y10T74/19284; Y10T74/19288
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) | 1943-09-17 | 1944-03-18 | 1944-09-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1947-09-17 | 1948-03-18 | 1948-09-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1951-09-17 | 1952-03-18 | 1952-09-17 | $7700.00 | Window Closed / Lapsed |