US680723A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Depurator.
Assignee: Individual
•
Filing: 1901-04-24
•
Granted: 1901-08-20
•
Expires: 1921-04-24
Abstract
No abstract record available.
Inventors
- 👤 Ruth J Maurer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 00:00
CPC Classifications
A; A61; A61M; A61M3/00; A61M3/02; A61M3/0279; A61M1/00; A61M1/90; A61M1/92; A61M35/00; A61M3/0287
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) | 1904-08-19 | 1905-02-18 | 1905-08-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1908-08-19 | 1909-02-18 | 1909-08-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1912-08-19 | 1913-02-18 | 1913-08-20 | $7700.00 | Window Closed / Lapsed |