US1651567A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process of manufacturing porous bodies, diaphragms, filters, and the like of ebonite
Assignee: Individual
•
Filing: 1922-04-22
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Granted: 1927-12-06
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Expires: 1942-04-22
Abstract
No abstract record available.
Inventors
- 👤 Wilderman Meyer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 19:20
CPC Classifications
B; B29; B29C; B29C67/00; B29C67/02; B29C67/04; B29C43/00; B29C43/003; B29C43/006; B29C43/32; B29C43/52; B29K; B29K2021/00; B29K2105/00; B29K2105/04; B29L; B29L2031/00; B29L2031/14; B29L2031/34; B29L2031/3468; B29L2031/755; Y; Y10; Y10S; Y10S521/00; Y10S521/919
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) | 1930-12-05 | 1931-06-06 | 1931-12-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1934-12-05 | 1935-06-06 | 1935-12-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1938-12-05 | 1939-06-06 | 1939-12-06 | $7700.00 | Window Closed / Lapsed |