US2040937A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Laminated article and manufacture of same
Assignee: DuPont Viscoloid Co
•
Filing: 1934-07-21
•
Granted: 1936-05-19
•
Expires: 1954-07-21
Abstract
No abstract record available.
Inventors
- 👤 John W Haught
- 👤 Rodman Ernest
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 09:12
CPC Classifications
C; C03; C03C; C03C27/00; C03C27/06; C03C27/10; C08; C08K; C08K5/00; C08K5/04; C08K5/10; C08K5/12; Y; Y10; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31551; Y10T428/31634; Y10T428/31638; Y10T428/31855; Y10T428/3188; Y10T428/31884
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1939-05-19 | 1939-11-18 | 1940-05-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1943-05-19 | 1943-11-18 | 1944-05-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1947-05-19 | 1947-11-18 | 1948-05-19 | $7700.00 | Window Closed / Lapsed |