US3515609A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of manufacture of reinforced unwoven felts
Assignee: Individual
•
Filing: 1966-03-01
•
Granted: 1970-06-02
•
Expires: 1986-03-01
Abstract
No abstract record available.
Inventors
- 👤 Bernard Rudloff
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 18:22
CPC Classifications
D; D04; D04H; D04H5/00; D04H5/08; D04H13/00
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US2437689A
Cited
US2308849A
Cited
US2409951A
Cited
US2543101A
Cited
US2897874A
Cited
US2927623A
Cited
US3050427A
Cited
US3356780A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-06-01 | 1973-12-01 | 1974-06-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-06-01 | 1977-12-01 | 1978-06-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-06-01 | 1981-12-01 | 1982-06-02 | $7700.00 | Window Closed / Lapsed |