US2687139A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for controlling detergent concentration in dishwashing machines or the like
Assignee: BOIS CO Inc DU
•
Filing: 1948-04-22
•
Granted: 1954-08-24
•
Expires: 1968-04-22
Abstract
No abstract record available.
Inventors
- 👤 Sidney G Noble
- 👤 Clark E Woodrow
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 05:35
CPC Classifications
A; A47; A47L; A47L15/00; A47L15/0018; A47L15/0055; A47L2401/00; A47L2401/30; A47L2501/00; A47L2501/07; Y; Y10; Y10T; Y10T137/00; Y10T137/0318; Y10T137/0324; Y10T137/0329; Y10T137/034
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US1806536A
Cited
US1530833A
Cited
US1830333A
Cited
US2057286A
Cited
US2266205A
Cited
US2370609A
Cited
US2377363A
Cited
US2376694A
Cited
US2490634A
Cited
US2585059A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-08-23 | 1958-02-22 | 1958-08-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-08-23 | 1962-02-22 | 1962-08-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-08-23 | 1966-02-22 | 1966-08-24 | $7700.00 | Window Closed / Lapsed |