US2776685A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for manufacturing crosscut fibrous elements for structures
Assignee: Changewood Corp
•
Filing: 1953-08-19
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Granted: 1957-01-08
•
Expires: 1973-08-19
Abstract
No abstract record available.
Inventors
- 👤 James D A Clark
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 20:54
CPC Classifications
B; B27; B27L; B27L11/00; B27L11/02; D; D21; D21D; D21D5/00; D21D5/02
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US2689092A
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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) | 1960-01-08 | 1960-07-09 | 1961-01-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-01-08 | 1964-07-09 | 1965-01-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-01-08 | 1968-07-09 | 1969-01-08 | $7700.00 | Window Closed / Lapsed |