Patent US3393408A successfully refreshed from Google Patents.
US3393408A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Rodent barrier attachment for water closets
Assignee: Individual
•
Filing: 1967-05-01
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Granted: 1968-07-23
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Expires: 1987-05-01
Abstract
No abstract record available.
Inventors
- 👤 Frank C Martin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 11:23
CPC Classifications
E; E03; E03D; E03D11/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US292035A
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US344141A
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US604117A
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US814788A
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US906562A
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US1239319A
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US1397471A
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US1811611A
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US2038494A
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US2089141A
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US3047013A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-07-23 | 1972-01-22 | 1972-07-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-07-23 | 1976-01-22 | 1976-07-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-07-23 | 1980-01-22 | 1980-07-23 | $7700.00 | Window Closed / Lapsed |