Patent US2233985A successfully refreshed from Google Patents.
US2233985A
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US
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Assignee: Boston Woven Hose and Rubber Co
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Filing: 1940-05-01
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Granted: 1941-03-04
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Expires: 1960-05-01
Abstract
No abstract record available.
Inventors
- 👤 Thomas M Knowland
- 👤 Arthur G Russell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 09:22
CPC Classifications
D; D01; D01H; D01H5/00; D01H5/18; D01H5/58
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) | 1944-03-03 | 1944-09-02 | 1945-03-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1948-03-03 | 1948-09-02 | 1949-03-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1952-03-03 | 1952-09-02 | 1953-03-04 | $7700.00 | Window Closed / Lapsed |