Patent US2620901A successfully refreshed from Google Patents.
US2620901A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Self-applying electromagnetically releasable brake
Assignee: ROSWELL N STEARNS
•
Filing: 1949-01-19
•
Granted: 1952-12-09
•
Expires: 1969-01-19
Abstract
No abstract record available.
Inventors
- 👤 Roswell H Stearns
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 13:52
CPC Classifications
H; H02; H02K; H02K7/00; H02K7/10; H02K7/102; H02K7/1021; H02K7/1023; F; F16; F16D; F16D55/00; F16D55/24; F16D55/26; F16D55/36; F16D59/00; F16D59/02; F16D65/00; F16D65/38; F16D65/40; F16D65/42; F16D65/46; F16D66/00; F16D66/02; F16D66/021; F16D66/022; F16D66/025; F16D2065/383; 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)
US2059244A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-12-09 | 1956-06-09 | 1956-12-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-12-09 | 1960-06-09 | 1960-12-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-12-09 | 1964-06-09 | 1964-12-09 | $7700.00 | Window Closed / Lapsed |