US1950466A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Automatic self-cleaning strainer
Assignee: Brassert & Co
•
Filing: 1931-11-14
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Granted: 1934-03-13
•
Expires: 1951-11-14
Abstract
No abstract record available.
Inventors
- 👤 Wille Fredrik
- 👤 Albert J Hulse
- 👤 William M Kirk
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 15:13
CPC Classifications
B; B01; B01D; B01D33/00; B01D33/06; B01D33/073; B01D33/44; B01D33/48; B01D33/50; B01D33/503; B01D2201/00; B01D2201/08; B01D2201/081; B01D2201/082; B01D2201/084; B01D2201/28; B01D2201/287
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) | 1937-03-12 | 1937-09-11 | 1938-03-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1941-03-12 | 1941-09-11 | 1942-03-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1945-03-12 | 1945-09-11 | 1946-03-13 | $7700.00 | Window Closed / Lapsed |