US1219843A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Water-electrolyzing apparatus.
Assignee: UNIVERSAL OXYGEN Co
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Filing: 1913-03-21
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Granted: 1917-03-20
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Expires: 1933-03-21
Abstract
No abstract record available.
Inventors
- 👤 Rudolph Jacob Johannes Mueller
- 👤 Erroll Goddard Rowlands
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 13:51
CPC Classifications
C; C25; C25B; C25B9/00; C25B9/17; C25B9/19; C25B9/70; C25B9/73; C25B9/77; C25B9/75
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) | 1920-03-19 | 1920-09-18 | 1921-03-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1924-03-19 | 1924-09-18 | 1925-03-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1928-03-19 | 1928-09-18 | 1929-03-20 | $7700.00 | Window Closed / Lapsed |