Patent US3729620A successfully refreshed from Google Patents.
Patent US2015445A successfully refreshed from Google Patents.
US2015445A
Expired / Lapsed
US
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Process of and apparatus for shaping sheet rubber or the like
Assignee: Boston Woven Hose and Rubber Co
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Filing: 1934-12-18
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Granted: 1935-09-24
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Expires: 1954-12-18
Abstract
No abstract record available.
Inventors
- 👤 John M Bierer
- 👤 George E Apel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 10:26
CPC Classifications
B; B31; B31F; B31F1/00; B31F1/0003; B31F1/0006; B31F1/0009; B31F1/0019; B31F1/0029; B29; B29C; B29C53/00; B29C53/34; B29K; B29K2021/00
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) | 1938-09-23 | 1939-03-25 | 1939-09-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1942-09-23 | 1943-03-25 | 1943-09-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1946-09-23 | 1947-03-25 | 1947-09-24 | $7700.00 | Window Closed / Lapsed |