Patent US2551796A successfully refreshed from Google Patents.
US2551796A
Expired / Lapsed
US
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Composite article and method of making it
Assignee: Individual
•
Filing: 1947-11-05
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Granted: 1951-05-08
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Expires: 1967-11-05
Abstract
No abstract record available.
Inventors
- 👤 James R Fitzpatrick
- 👤 Albert N Carstens
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 08:36
CPC Classifications
E; E04; E04C; E04C2/00; E04C2/02; E04C2/10; E04C2/24; B; B27; B27D; B27D1/00; B27D1/04; Y; Y10; Y10T; Y10T156/00; Y10T156/10; Y10T156/1052; Y10T156/1056; Y10T156/1057; Y10T428/00; Y10T428/24; Y10T428/24273; Y10T428/24322
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
61 words
THE METHOD OF FORMING A PERFORATED, LAMINATED PANEL WHIC COMPRISES THE FOLLOWING STEPS: PREPARING A PLURALITY OF SHEETS OF WOOD, PREPARING A PLURALITY OF SHEETS OF SUPPORTING AND REINFORCING MATERIAL HARDER THAN SAID WOOD, POSITIONING ONE OF SAID SUPPORTING AND REINFORCING SHEETS BETWEEN EACH PAIR OF SAID WOODEN SHEETS AND SECURING THE COMPOSITE MASS TOGETHER, AND THEREAFTER PERFORATING THE COMPOSITE MASS.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-05-07 | 1954-11-06 | 1955-05-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-05-07 | 1958-11-06 | 1959-05-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-05-07 | 1962-11-06 | 1963-05-08 | $7700.00 | Window Closed / Lapsed |