US3511737A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Indentation and groove resistant composite panel structure
Assignee: Weyerhaeuser Co
•
Filing: 1967-11-08
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Granted: 1970-05-12
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Expires: 1987-11-08
Abstract
No abstract record available.
Inventors
- 👤 Katashi Oita
- 👤 Roland E Kreibich
- 👤 Frederick C Pneuman
- 👤 Richard W Caster
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 21:31
CPC Classifications
B; B27; B27D; B27D1/00; B27D1/04; B65; B65D; B65D19/00; Y; Y10; Y10T; Y10T428/00; Y10T428/17; Y10T428/18; Y10T428/24; Y10T428/24942; Y10T428/2495; Y10T428/24967; Y10T428/31504; Y10T428/31971; Y10T428/31975; Y10T428/31978; Y10T428/31982
Claims Analysis
Total Claims: 0
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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) | 1973-05-11 | 1973-11-10 | 1974-05-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-05-11 | 1977-11-10 | 1978-05-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-05-11 | 1981-11-10 | 1982-05-12 | $7700.00 | Window Closed / Lapsed |