US2489848A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Abrasive scouring powder
Assignee: Wyandotte Chemicals Corp
•
Filing: 1947-10-10
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Granted: 1949-11-29
•
Expires: 1967-10-10
Abstract
No abstract record available.
Inventors
- 👤 Leslie R Bacon
- 👤 Thomas H Vaughn
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 21:07
CPC Classifications
C; C11; C11D; C11D3/00; C11D3/02; C11D3/12; C11D3/14
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2060850A
Cited
US2296690A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-11-28 | 1953-05-30 | 1953-11-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-11-28 | 1957-05-30 | 1957-11-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-11-28 | 1961-05-30 | 1961-11-29 | $7700.00 | Window Closed / Lapsed |