US673452A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrolytic apparatus.
Assignee: ROBERTS CHEMICAL Co
•
Filing: 1892-01-21
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Granted: 1901-05-07
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Expires: 1912-01-21
Abstract
No abstract record available.
Inventors
- 👤 Isaiah L Roberts
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 22:15
CPC Classifications
C; C25; C25B; C25B9/00; C25B9/40; C02; C02F; C02F1/00; C02F1/46; C02F1/461; C02F1/46104; C25B11/00; C25B11/02; C25B11/037; C02F2201/00; C02F2201/002; C02F2201/003; C02F2201/46; C02F2201/461; C02F2201/46105; C02F2201/46115
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) | 1904-05-06 | 1904-11-05 | 1905-05-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1908-05-06 | 1908-11-05 | 1909-05-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1912-05-06 | 1912-11-05 | 1913-05-07 | $7700.00 | Window Closed / Lapsed |