Patent US2033170A successfully refreshed from Google Patents.
US2033170A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Production of coated fabrics
Assignee: EIDP Inc
•
Filing: 1932-08-25
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Granted: 1936-03-10
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Expires: 1952-08-25
Abstract
No abstract record available.
Inventors
- 👤 Cornelius A Alt
- 👤 Donald A Rankin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 21:18
CPC Classifications
D; D06; D06M; D06M15/00; D06M15/01; D06M15/03; D06M15/05; D06M15/07; Y; Y10; Y10S; Y10S160/00; Y10S160/07; Y10S428/00; Y10S428/918; Y10T; Y10T442/00; Y10T442/20; Y10T442/2041; Y10T442/2123; Y10T442/2352; Y10T442/2369
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) | 1939-03-10 | 1939-09-09 | 1940-03-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1943-03-10 | 1943-09-09 | 1944-03-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1947-03-10 | 1947-09-09 | 1948-03-10 | $7700.00 | Window Closed / Lapsed |