US2830138A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electric current collector inserts
Assignee: Morgan Advanced Materials PLC
•
Filing: 1952-12-01
•
Granted: 1958-04-08
•
Expires: 1972-12-01
Abstract
No abstract record available.
Inventors
- 👤 Monnery John Lionel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 18:45
CPC Classifications
B; B60; B60L; B60L5/00; B60L5/04; B60L5/08; B60L5/085
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
CH133366A
Cited
US2342296A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-04-07 | 1961-10-07 | 1962-04-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-04-07 | 1965-10-07 | 1966-04-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-04-07 | 1969-10-07 | 1970-04-08 | $7700.00 | Window Closed / Lapsed |