US2945558A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Disposable filter bag
Assignee: Studley Paper Co Inc
•
Filing: 1958-01-21
•
Granted: 1960-07-19
•
Expires: 1978-01-21
Abstract
No abstract record available.
Inventors
- 👤 Cordell Martin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 14:52
CPC Classifications
A; A47; A47L; A47L9/00; A47L9/10; A47L9/14; A47L9/1427; A47L9/1436; Y; Y10; Y10S; Y10S55/00; Y10S55/02
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1586868A
Cited
US2336540A
Cited
US2711982A
Cited
US2808898A
Cited
US2792076A
Cited
US2766844A
Cited
US2832433A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-07-19 | 1964-01-18 | 1964-07-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-07-19 | 1968-01-18 | 1968-07-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-07-19 | 1972-01-18 | 1972-07-19 | $7700.00 | Window Closed / Lapsed |