US1685539A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electromagnetic carrier system for heavy plates
Assignee: CHARLES L HUSTON
•
Filing: 1925-03-19
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Granted: 1928-09-25
•
Expires: 1945-03-19
Abstract
No abstract record available.
Inventors
- 👤 Goodfellow Alfred
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 16:52
CPC Classifications
B; B21; B21D; B21D43/00; B21D43/02; B21D43/18; Y; Y10; Y10T; Y10T83/00; Y10T83/04; Y10T83/0505; Y10T83/051; Y10T83/444; Y10T83/4564; Y10T83/4567; Y10T83/4572; Y10T83/4574
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) | 1931-09-25 | 1932-03-26 | 1932-09-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1935-09-25 | 1936-03-26 | 1936-09-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1939-09-25 | 1940-03-26 | 1940-09-25 | $7700.00 | Window Closed / Lapsed |