US3468690A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Form boards and coatings therefor
Assignee: US Plywood Champion Papers Inc
•
Filing: 1965-10-24
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Granted: 1969-09-23
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Expires: 1985-10-24
Abstract
No abstract record available.
Inventors
- 👤 Charles B Hemming
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 11:25
CPC Classifications
E; E04; E04G; E04G9/00; E04G9/02; E04G9/05; C; C08; C08G; C08G18/00; Y; Y10; Y10T; Y10T428/00; Y10T428/249921; Y10T428/249953; Y10T428/249987; Y10T428/249994; Y10T428/249995; Y10T428/31504; Y10T428/31511; Y10T428/31551; Y10T428/31591; Y10T428/31844; Y10T428/31848; Y10T428/31851
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) | 1972-09-22 | 1973-03-24 | 1973-09-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-09-22 | 1977-03-24 | 1977-09-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-09-22 | 1981-03-24 | 1981-09-23 | $7700.00 | Window Closed / Lapsed |