US2196569A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Friction disk and method of making the same
Assignee: Russell Manufacturing Co
•
Filing: 1939-01-21
•
Granted: 1940-04-09
•
Expires: 1959-01-21
Abstract
No abstract record available.
Inventors
- 👤 Arthur D Stroehla
- 👤 Louis E Richter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 18:26
CPC Classifications
F; F16; F16D; F16D69/00; F16D69/02; F16D69/021; F16D69/022; F16D13/00; F16D13/58; F16D13/60; F16D13/64; Y; Y10; Y10T; Y10T428/00; Y10T428/21; Y10T428/213
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) | 1943-04-09 | 1943-10-09 | 1944-04-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1947-04-09 | 1947-10-09 | 1948-04-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1951-04-09 | 1951-10-09 | 1952-04-09 | $7700.00 | Window Closed / Lapsed |