US2530682A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Water treatment pump with measuring trap
Assignee: DIHYDROL CO
•
Filing: 1949-03-05
•
Granted: 1950-11-21
•
Expires: 1969-03-05
Abstract
No abstract record available.
Inventors
- 👤 Van B Coldsnow
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 03:48
CPC Classifications
C; C02; C02F; C02F1/00; C02F1/68; C02F1/685; C02F1/686; Y; Y10; Y10T; Y10T137/00; Y10T137/2496; Y10T137/2514; Y10T137/2531; Y10T137/7722; Y10T137/7837; Y10T137/7838; Y10T137/7842; Y10T137/8593; Y10T137/85978; Y10T137/85986
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US1051888A
Cited
US1261061A
Cited
US2238747A
Cited
US2264459A
Cited
US2310459A
Cited
US2417372A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-11-20 | 1954-05-22 | 1954-11-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-11-20 | 1958-05-22 | 1958-11-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-11-20 | 1962-05-22 | 1962-11-21 | $7700.00 | Window Closed / Lapsed |