Patent US2840044A successfully refreshed from Google Patents.
US2840044A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Servo braking control device for selective slow and high speed braking operation
Assignee: MURRAY H BLUMENFELD
•
Filing: 1952-05-20
•
Granted: 1958-06-24
•
Expires: 1972-05-20
Abstract
No abstract record available.
Inventors
- 👤 Carrion Joseph
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 19:46
CPC Classifications
B; B60; B60T; B60T13/00; B60T13/10; B60T13/12
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US747772A
Cited
US1588659A
Cited
GB243588A
Cited
FR656845A
Cited
US2241374A
Cited
US2229247A
Cited
US2209418A
Cited
US2281755A
Cited
US2344055A
Cited
US2328684A
Cited
US2473361A
Cited
US2553080A
Cited
US2662377A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-06-23 | 1961-12-23 | 1962-06-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-06-23 | 1965-12-23 | 1966-06-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-06-23 | 1969-12-23 | 1970-06-24 | $7700.00 | Window Closed / Lapsed |