Patent US1758438A successfully refreshed from Google Patents.
US1758438A
Expired / Lapsed
US
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Process for manufacturing molded extension tops and molded boots
Assignee: Hood Rubber Co
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Filing: 1929-01-08
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Granted: 1930-05-13
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Expires: 1949-01-08
Abstract
No abstract record available.
Inventors
- 👤 Alfred A Glidden
- 👤 Thomas M Knowland
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 16:09
CPC Classifications
B; B29; B29D; B29D35/00; B29D35/12; B29D35/128; B29D35/14; B29D35/146; B29C; B29C35/00; B29K; B29K2021/00; Y; Y10; Y10T; Y10T156/00; Y10T156/10; Y10T156/1052; Y10T156/1062; Y10T156/1066
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) | 1933-05-12 | 1933-11-11 | 1934-05-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1937-05-12 | 1937-11-11 | 1938-05-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1941-05-12 | 1941-11-11 | 1942-05-13 | $7700.00 | Window Closed / Lapsed |