US3491382A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Toilet stool ventilating means
Assignee: Individual
•
Filing: 1967-05-01
•
Granted: 1970-01-27
•
Expires: 1987-05-01
Abstract
No abstract record available.
Inventors
- 👤 Clarence E Poister
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 11:25
CPC Classifications
E; E03; E03D; E03D9/00; E03D9/04; E03D9/05; E03D9/052
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US1774156A
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US1798457A
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US1883406A
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FR849481A
Cited
US2172506A
Cited
US2677830A
Cited
US2990557A
Cited
CH394070A
Cited
US3020564A
Cited
US3332089A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-01-26 | 1973-07-28 | 1974-01-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-01-26 | 1977-07-28 | 1978-01-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-01-26 | 1981-07-28 | 1982-01-27 | $7700.00 | Window Closed / Lapsed |