US1852447A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of producing rubber articles
Assignee: Dunlop Rubber Co Ltd
•
Filing: 1930-03-20
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Granted: 1932-04-05
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Expires: 1950-03-20
Abstract
No abstract record available.
Inventors
- 👤 Chapman Wilfred Henry
- 👤 Pounder Donald Whitworth
- 👤 Murphy Edward Arthur
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 11:14
CPC Classifications
F; F16; F16J; F16J15/00; F16J15/02; F16J15/06; F16J15/10; A; A43; A43B; A43B17/00; A43B17/14; B; B29; B29C; B29C67/00; B29C67/24; B68; B68G; B68G5/00; B68G5/02; C; C08; C08C; C08C1/00; C08J; C08J9/00; C08J9/28; C08J9/30; C08L; C08L21/00; C08J2201/00; C08J2201/04; C08J2201/05; C08J2201/0504; C08J2321/00; Y; Y02; Y02E; Y02E60/00; Y02E60/10; Y10; Y10S; Y10S261/00; Y10S261/26
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) | 1935-04-05 | 1935-10-05 | 1936-04-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1939-04-05 | 1939-10-05 | 1940-04-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1943-04-05 | 1943-10-05 | 1944-04-05 | $7700.00 | Window Closed / Lapsed |