US1356780A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for the manufacture of magnesium powder
Assignee: AMERICAN MAGNESIUM Corp
•
Filing: 1917-07-23
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Granted: 1920-10-26
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Expires: 1937-07-23
Abstract
No abstract record available.
Inventors
- 👤 David S Nicol
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 13:10
CPC Classifications
B; B22; B22F; B22F9/00; B22F9/02; B22F9/06; B22F9/08; B22F9/082
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) | 1923-10-26 | 1924-04-26 | 1924-10-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1927-10-26 | 1928-04-26 | 1928-10-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1931-10-26 | 1932-04-26 | 1932-10-26 | $7700.00 | Window Closed / Lapsed |