US2640955A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electromagnetic straight-line motor
Assignee: ELECTRONOID Corp
•
Filing: 1949-04-02
•
Granted: 1953-06-02
•
Expires: 1969-04-02
Abstract
No abstract record available.
Inventors
- 👤 Frederick C Fisher
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 20:52
CPC Classifications
H; H02; H02K; H02K41/00; H02K41/02; H02K41/03; H02K41/031
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US469441A
Cited
US573821A
Cited
US2328337A
Cited
US1647147A
Cited
US1933911A
Cited
US2004114A
Cited
US2041607A
Cited
US1970412A
Cited
US1986639A
Cited
US2303263A
Cited
US2298573A
Cited
US2365632A
Cited
US2462533A
Cited
US2458770A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-06-01 | 1956-12-01 | 1957-06-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-06-01 | 1960-12-01 | 1961-06-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-06-01 | 1964-12-01 | 1965-06-02 | $7700.00 | Window Closed / Lapsed |