US2663429A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Liquid or gas self-cleaning filter and strainer
Assignee: Individual
•
Filing: 1950-02-28
•
Granted: 1953-12-22
•
Expires: 1970-02-28
Abstract
No abstract record available.
Inventors
- 👤 Le Roy T Bossard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 23:06
CPC Classifications
B; B01; B01D; B01D29/00; B01D29/62; B01D29/70; B01D29/74; B01D29/01; B01D29/05; B01D29/50; B01D29/52; B01D29/66; B01D33/00; B01D33/15
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
GB189618383A
Cited
US1102747A
Cited
US1443918A
Cited
US2087385A
Cited
US2117789A
Cited
US2347927A
Cited
US2343843A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-12-21 | 1957-06-22 | 1957-12-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-12-21 | 1961-06-22 | 1961-12-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-12-21 | 1965-06-22 | 1965-12-22 | $7700.00 | Window Closed / Lapsed |