Patent US1685666A successfully refreshed from Google Patents.
US1685666A
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Method and apparatus for storing alkali metals
Assignee: General Electric Co
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Filing: 1927-08-29
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Granted: 1928-09-25
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Expires: 1947-08-29
Abstract
No abstract record available.
Inventors
- 👤 Dorothy H Brophy
- 👤 William A Ruggles
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 18:34
CPC Classifications
H; H01; H01J; H01J9/00; H01J9/38; H01J9/395
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 |