Patent US1906151A successfully refreshed from Google Patents.
US1906151A
Expired / Lapsed
US
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Inflatable conduit stopper
Assignee: ELIZABETH A GOODMAN
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Filing: 1930-02-25
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Granted: 1933-04-25
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Expires: 1950-02-25
Abstract
No abstract record available.
Inventors
- 👤 Goodman Mary
- 👤 Elizabeth A Goodman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 13:57
CPC Classifications
F; F16; F16L; F16L55/00; F16L55/10; F16L55/12; F16L55/124; F16K; F16K7/00; F16K7/10
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) | 1936-04-24 | 1936-10-24 | 1937-04-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1940-04-24 | 1940-10-24 | 1941-04-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1944-04-24 | 1944-10-24 | 1945-04-25 | $7700.00 | Window Closed / Lapsed |