US646929A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Self-acting valve for regulating discharge of sewage into tidal waters.
Assignee: Individual
•
Filing: 1899-07-25
•
Granted: 1900-04-03
•
Expires: 1919-07-25
Abstract
No abstract record available.
Inventors
- 👤 Donald Cameron
- 👤 Frederick J Commin
- 👤 Arthur J Martin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 04:04
CPC Classifications
B; B01; B01D; B01D37/00; B01D37/04; C; C02; C02F; C02F1/00; C02F1/42
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
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) | 1903-04-03 | 1903-10-03 | 1904-04-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1907-04-03 | 1907-10-03 | 1908-04-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1911-04-03 | 1911-10-03 | 1912-04-03 | $7700.00 | Window Closed / Lapsed |