US2587945A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Friction disk and method of making same
Assignee: CONNECTICUT ASBESTOS PRODUCTS
•
Filing: 1947-07-01
•
Granted: 1952-03-04
•
Expires: 1967-07-01
Abstract
No abstract record available.
Inventors
- 👤 Wirth Hans
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 19:35
CPC Classifications
F; F16; F16D; F16D69/00; F16D69/02; F16D69/025; F16D69/026
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1638012A
Cited
US1620043A
Cited
US2258237A
Cited
US2264901A
Cited
US2277602A
Cited
US2240358A
Cited
US2448114A
Cited
US2431883A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-03-04 | 1955-09-03 | 1956-03-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-03-04 | 1959-09-03 | 1960-03-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-03-04 | 1963-09-03 | 1964-03-04 | $7700.00 | Window Closed / Lapsed |