Patent US2851139A successfully refreshed from Google Patents.
US2851139A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Friction disc
Assignee: Raybestos Manhattan Inc
•
Filing: 1955-08-17
•
Granted: 1958-09-09
•
Expires: 1975-08-17
Abstract
No abstract record available.
Inventors
- 👤 Dietz Gordon William
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 23:35
CPC Classifications
F; F16; F16D; F16D13/00; F16D13/58; F16D13/60; F16D13/64; F16D13/648; F16D69/00; F16D69/02; F16D69/027
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US2733798A
Cited
US1492862A
Cited
US1727841A
Cited
US1810360A
Cited
US2175418A
Cited
GB575996A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-09-08 | 1962-03-10 | 1962-09-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-09-08 | 1966-03-10 | 1966-09-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-09-08 | 1970-03-10 | 1970-09-09 | $7700.00 | Window Closed / Lapsed |