Patent US1802177A successfully refreshed from Google Patents.
US1802177A
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Assignee: ROTH RUBBER Co
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Filing: 1928-07-14
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Granted: 1931-04-21
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Expires: 1948-07-14
Abstract
No abstract record available.
Inventors
- 👤 William W Knight
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 23:17
CPC Classifications
F; F16; F16L; F16L17/00; F16L17/02; F16L17/03; F16L17/035; F16J; F16J15/00; F16J15/02; F16J15/021; F16J15/022; F16J15/024; F16J15/025; F16L19/00; F16L19/02; F16L19/0212; F16L19/0218; F16L19/08; F16L19/10; F16L19/14; F16L27/00; F16L27/08; F16L27/0804; F16L27/0808; F16L27/0812; F16L27/082
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) | 1934-04-20 | 1934-10-20 | 1935-04-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1938-04-20 | 1938-10-20 | 1939-04-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1942-04-20 | 1942-10-20 | 1943-04-21 | $7700.00 | Window Closed / Lapsed |