US2424891A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Thermostatic mixer for liquids
Assignee: Powers Regulator Co
•
Filing: 1943-12-29
•
Granted: 1947-07-29
•
Expires: 1963-12-29
Abstract
No abstract record available.
Inventors
- 👤 Kirchhoff Richard Carl
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 06:45
CPC Classifications
G; G05; G05D; G05D23/00; G05D23/01; G05D23/13; G05D23/1306; G05D23/132; G05D23/134; G05D23/1346
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US1725607A
Cited
US1869663A
Cited
US1932148A
Cited
US1943705A
Cited
US2122600A
Cited
US2275742A
Cited
US2287810A
Cited
US2272403A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1950-07-28 | 1951-01-27 | 1951-07-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1954-07-28 | 1955-01-27 | 1955-07-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1958-07-28 | 1959-01-27 | 1959-07-29 | $7700.00 | Window Closed / Lapsed |