US2669995A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Disposable filter and holder
Assignee: Individual
•
Filing: 1950-04-28
•
Granted: 1954-02-23
•
Expires: 1970-04-28
Abstract
No abstract record available.
Inventors
- 👤 Arnold I Troy
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 12:31
CPC Classifications
A; A24; A24D; A24D3/00; A24D3/04
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
DE464298C
Cited
US769546A
Cited
GB191109228A
Cited
US1883715A
Cited
US2035398A
Cited
US2136222A
Cited
US2221443A
Cited
US2211166A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-02-22 | 1957-08-24 | 1958-02-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-02-22 | 1961-08-24 | 1962-02-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-02-22 | 1965-08-24 | 1966-02-23 | $7700.00 | Window Closed / Lapsed |