US3404515A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Vacuum cleaner filter bag
Assignee: Studley Paper Co Inc
•
Filing: 1967-05-19
•
Granted: 1968-10-08
•
Expires: 1987-05-19
Abstract
No abstract record available.
Inventors
- 👤 John J Fesco
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 21:35
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)
US808170A
Cited
US2596807A
Cited
US2596808A
Cited
US2737263A
Cited
US2804166A
Cited
US2771152A
Cited
GB788578A
Cited
US2752002A
Cited
US2945558A
Cited
GB954996A
Cited
US3176450A
Cited
FR1429236A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-10-08 | 1972-04-08 | 1972-10-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-10-08 | 1976-04-08 | 1976-10-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-10-08 | 1980-04-08 | 1980-10-08 | $7700.00 | Window Closed / Lapsed |