US1315365A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of making electromagnets
Assignee: —
•
Filing: —
•
Granted: 1919-09-09
•
Expires: 1936-09-09
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 18:23
CPC Classifications
B; B29; B29C; B29C45/00; B29C45/16; B29C45/1671; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49002; Y10T29/4902
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1922-09-08 | 1923-03-10 | 1923-09-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1926-09-08 | 1927-03-10 | 1927-09-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1930-09-08 | 1931-03-10 | 1931-09-09 | $7700.00 | Window Closed / Lapsed |