US3394062A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for the electrolytic production of hydrogen and oxygen
Assignee: Henes Manufacturing Co
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Filing: 1964-06-30
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Granted: 1968-07-23
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Expires: 1984-06-30
Abstract
No abstract record available.
Inventors
- 👤 William A Rhodes
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 01:10
CPC Classifications
C; C25; C25B; C25B1/00; C25B1/01; C25B1/02; C25B1/04; Y; Y02; Y02E; Y02E60/00; Y02E60/30; Y02E60/36
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-07-23 | 1972-01-22 | 1972-07-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-07-23 | 1976-01-22 | 1976-07-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-07-23 | 1980-01-22 | 1980-07-23 | $7700.00 | Window Closed / Lapsed |