Patent US5689503A successfully refreshed from Google Patents.
Patent US1283993A successfully refreshed from Google Patents.
US1283993A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for purifying water or sewage.
Assignee: Individual
•
Filing: 1915-03-26
•
Granted: 1918-11-05
•
Expires: 1935-03-26
Abstract
No abstract record available.
Inventors
- 👤 Charles F Wallace
- 👤 Martin F Tiernan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 15:54
CPC Classifications
G; G05; G05D; G05D23/00; G05D23/01; G05D23/13; G05D23/1306; G05D23/1313; Y; Y10; Y10S; Y10S261/00; Y10S261/70; Y10T; Y10T137/00; Y10T137/2496; Y10T137/2514; Y10T137/2521; Y10T137/2559; Y10T137/2564; Y10T137/2567; Y10T137/2569; Y10T137/7722; Y10T137/7737; Y10T137/7781; Y10T137/7835; Y10T137/7836; Y10T137/8158; Y10T137/8175
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) | 1921-11-04 | 1922-05-06 | 1922-11-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1925-11-04 | 1926-05-06 | 1926-11-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1929-11-04 | 1930-05-06 | 1930-11-05 | $7700.00 | Window Closed / Lapsed |