Patent US2765982A successfully refreshed from Google Patents.
Patent US1229437A successfully refreshed from Google Patents.
US1229437A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Strainer.
Assignee: Individual
•
Filing: 1916-10-09
•
Granted: 1917-06-12
•
Expires: 1936-10-09
Abstract
No abstract record available.
Inventors
- 👤 William H Foster
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 23:38
CPC Classifications
B; B01; B01D; B01D27/00; B01D27/02
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
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) | 1920-06-11 | 1920-12-11 | 1921-06-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1924-06-11 | 1924-12-11 | 1925-06-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1928-06-11 | 1928-12-11 | 1929-06-12 | $7700.00 | Window Closed / Lapsed |