US2568576A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Counterbalanced crankshaft for internal-combustion engines
Assignee: Individual
•
Filing: 1947-06-30
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Granted: 1951-09-18
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Expires: 1967-06-30
Abstract
No abstract record available.
Inventors
- 👤 Julius E Witzky
- 👤 Wolfgang S Lang
- 👤 Richard J Jakob
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 20:46
CPC Classifications
F; F16; F16F; F16F15/00; F16F15/28; F16F15/283; Y; Y10; Y10T; Y10T74/00; Y10T74/21; Y10T74/2173; Y10T74/2183
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) | 1954-09-17 | 1955-03-19 | 1955-09-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-09-17 | 1959-03-19 | 1959-09-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-09-17 | 1963-03-19 | 1963-09-18 | $7700.00 | Window Closed / Lapsed |