US2821771A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of making a papermaker's felt
Assignee: F C Huyck & Sons
•
Filing: 1957-04-05
•
Granted: 1958-02-04
•
Expires: 1977-04-05
Abstract
No abstract record available.
Inventors
- 👤 John D Skeer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 16:25
CPC Classifications
D; D21; D21F; D21F1/00; D21F1/0027
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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GB565180A
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US2705880A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-02-03 | 1961-08-05 | 1962-02-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-02-03 | 1965-08-05 | 1966-02-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-02-03 | 1969-08-05 | 1970-02-04 | $7700.00 | Window Closed / Lapsed |