US2543830A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electromagnetic brake device
Assignee: STANDARD DAYTON CORP
•
Filing: 1945-10-17
•
Granted: 1951-03-06
•
Expires: 1965-10-17
Abstract
No abstract record available.
Inventors
- 👤 Paul B Burrus
- 👤 Lowell A Ditmer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 22:11
CPC Classifications
F; F16; F16D; F16D59/00; F16D59/02; F16D55/00; F16D55/24; F16D55/26; F16D55/28; F16D65/00; F16D65/0006; F16D2055/0004; F16D2055/0058; F16D2121/00; F16D2121/18; F16D2121/20; F16D2121/22; F16D2127/00; F16D2127/02; F16D2127/04
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US2160153A
Cited
US1162370A
Cited
US1172917A
Cited
US1909918A
Cited
US2116522A
Cited
US2019000A
Cited
US2009121A
Cited
US2172460A
Cited
US2190685A
Cited
US2148796A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-03-05 | 1954-09-04 | 1955-03-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-03-05 | 1958-09-04 | 1959-03-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-03-05 | 1962-09-04 | 1963-03-06 | $7700.00 | Window Closed / Lapsed |