US2476598A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Treatment of steam boiler water
Assignee: Hall Labs LLC
•
Filing: 1945-02-16
•
Granted: 1949-07-19
•
Expires: 1965-02-16
Abstract
No abstract record available.
Inventors
- 👤 Ralph E Hall
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 14:56
CPC Classifications
C; C02; C02F; C02F5/00; C02F5/08; C02F5/083; C02F5/02; C02F5/025
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US2313425A
Cited
US1613656A
Cited
US556021A
Cited
US1294007A
Cited
US1426638A
Cited
US1613701A
Cited
US1903041A
Cited
US1997256A
Cited
US1956515A
Cited
US2046308A
Cited
US2156173A
Cited
US2267841A
Cited
US2332209A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-07-18 | 1953-01-17 | 1953-07-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-07-18 | 1957-01-17 | 1957-07-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-07-18 | 1961-01-17 | 1961-07-19 | $7700.00 | Window Closed / Lapsed |