Patent US1898352A successfully refreshed from Google Patents.
US1898352A
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US
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Means for electrolytic production of gases
Assignee: HOWARD E DORSEY
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Filing: 1932-05-31
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Granted: 1933-02-21
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Expires: 1952-05-31
Abstract
No abstract record available.
Inventors
- 👤 Ora K Enzor
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 07:13
CPC Classifications
C; C25; C25B; C25B9/00; C25B9/17; C25B9/19; C25B1/00; C25B1/01; C25B1/02; C25B1/04; C25B11/00; C25B11/02; C25B9/70; C25B9/73; C25B9/77
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) | 1936-02-21 | 1936-08-22 | 1937-02-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1940-02-21 | 1940-08-22 | 1941-02-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1944-02-21 | 1944-08-22 | 1945-02-21 | $7700.00 | Window Closed / Lapsed |