US2336754A
Expired / Lapsed
US
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Apparatus for preparing permeable hard rubber strips for vulcanization
Assignee: American Hard Rubber Co
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Filing: 1941-02-06
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Granted: 1943-12-14
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Expires: 1961-02-06
Abstract
No abstract record available.
Inventors
- 👤 Herman J Schelhammer
- 👤 Kenneth E Hunt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 14:20
CPC Classifications
B; B29; B29C; B29C35/00; B29C35/02; B29B; B29B7/00; B29B7/74; B29B7/7476; B29B7/7495; B29C37/00; B29C37/0067; B29C37/0075; B29B7/30; B29B7/34; B29B7/52; B29B7/56; B29B7/566; B29K; B29K2021/00; Y; Y10; Y10S; Y10S242/00; Y10S242/917; Y10S242/918; Y10S411/00; Y10S411/918
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) | 1946-12-13 | 1947-06-14 | 1947-12-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1950-12-13 | 1951-06-14 | 1951-12-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1954-12-13 | 1955-06-14 | 1955-12-14 | $7700.00 | Window Closed / Lapsed |