Patent US2636248A successfully refreshed from Google Patents.
US2636248A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for making felt
Assignee: Individual
•
Filing: 1950-02-01
•
Granted: 1953-04-28
•
Expires: 1970-02-01
Abstract
No abstract record available.
Inventors
- 👤 Jr Frank H Lee
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 14:35
CPC Classifications
D; D04; D04H; D04H17/00; D04H17/10; D04H17/12
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USRE22090E
Cited
US810898A
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US1460519A
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US1679100A
Cited
US1716401A
Cited
US2083383A
Cited
US2169372A
Cited
US2357474A
Cited
US2441390A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-04-27 | 1956-10-27 | 1957-04-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-04-27 | 1960-10-27 | 1961-04-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-04-27 | 1964-10-27 | 1965-04-28 | $7700.00 | Window Closed / Lapsed |