US2213643A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Coated fibrous sheet materials
Assignee: Vanderbilt Chemicals LLC
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Filing: 1938-10-11
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Granted: 1940-09-03
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Expires: 1958-10-11
Abstract
No abstract record available.
Inventors
- 👤 William H Alton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 05:18
CPC Classifications
D; D21; D21H; D21H17/00; D21H17/63; D21H17/67; D21H17/69; D06; D06M; D06M15/00; D06M15/19; D06M15/37; D06M15/39; D21H19/00; D21H19/36; D21H19/38; D21H19/385; D21H19/40; D21H19/44; D21H19/62; Y; Y10; Y10S; Y10S260/00; Y10S260/47; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31786; Y10T428/3179; Y10T442/00; Y10T442/20; Y10T442/2484
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) | 1943-09-03 | 1944-03-04 | 1944-09-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1947-09-03 | 1948-03-04 | 1948-09-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1951-09-03 | 1952-03-04 | 1952-09-03 | $7700.00 | Window Closed / Lapsed |