US3508301A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and apparatus for forming felts and mats
Assignee: JUDD A BROWN
•
Filing: 1967-05-15
•
Granted: 1970-04-28
•
Expires: 1987-05-15
Abstract
No abstract record available.
Inventors
- 👤 Judd A Brown
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 17:29
CPC Classifications
B; B27; B27N; B27N3/00; B27N3/08; B27N3/10; B27N3/14
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2517903A
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US2698271A
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US2708303A
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US2700177A
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US3012290A
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US2968068A
Cited
US2974394A
Cited
US3044111A
Cited
US3286007A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-04-27 | 1973-10-27 | 1974-04-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-04-27 | 1977-10-27 | 1978-04-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-04-27 | 1981-10-27 | 1982-04-28 | $7700.00 | Window Closed / Lapsed |