US2374976A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Clarifying device
Assignee: BRIGGS CLARLFIER Co
•
Filing: 1942-06-26
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Granted: 1945-05-01
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Expires: 1962-06-26
Abstract
No abstract record available.
Inventors
- 👤 Southwick W Briggs
- 👤 Walter C Bauer
- 👤 Walter J Ewbank
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 21:34
CPC Classifications
B; B01; B01D; B01D35/00; B01D35/14; B01D24/00; B01D24/02; B01D24/04; B01D24/08; B01D29/00; B01D29/11; B01D29/13; B01D29/15; B01D29/50; B01D29/52; B01D2201/00; B01D2201/18; B01D2201/182
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1948-04-30 | 1948-10-30 | 1949-05-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1952-04-30 | 1952-10-30 | 1953-05-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1956-04-30 | 1956-10-30 | 1957-05-01 | $7700.00 | Window Closed / Lapsed |