US3498031A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Filter bag having a felt-like insert
Assignee: Studley Paper Co Inc
•
Filing: 1966-09-27
•
Granted: 1970-03-03
•
Expires: 1986-09-27
Abstract
No abstract record available.
Inventors
- 👤 John J Fesco
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 23:53
CPC Classifications
A; A47; A47L; A47L9/00; A47L9/10; A47L9/14; Y; Y10; Y10S; Y10S55/00; Y10S55/02
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US2039741A
Cited
US2237499A
Cited
US2225389A
Cited
US2324231A
Cited
US2188428A
Cited
US2372911A
Cited
US2804166A
Cited
US2813596A
Cited
US2792076A
Cited
US2848062A
Cited
US2848063A
Cited
US2832433A
Cited
US2935158A
Cited
US2961063A
Cited
US2995206A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-03-02 | 1973-09-01 | 1974-03-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-03-02 | 1977-09-01 | 1978-03-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-03-02 | 1981-09-01 | 1982-03-03 | $7700.00 | Window Closed / Lapsed |