US3488780A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for antipollution of sewage systems at toilet source
Assignee: Individual
•
Filing: 1967-06-14
•
Granted: 1970-01-13
•
Expires: 1987-06-14
Abstract
No abstract record available.
Inventors
- 👤 Blanche Ames Ames
- 👤 Evelyn Ames Davis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 15:02
CPC Classifications
A; A47; A47K; A47K11/00; A47K11/02; Y; Y02; Y02A; Y02A50/00; Y02A50/30
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US228313A
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US1181590A
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US1341408A
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US1446256A
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US1996325A
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US2678450A
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US2768386A
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US2671906A
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US2794989A
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US3032776A
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US3059597A
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US3092049A
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US3217954A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-01-12 | 1973-07-14 | 1974-01-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-01-12 | 1977-07-14 | 1978-01-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-01-12 | 1981-07-14 | 1982-01-13 | $7700.00 | Window Closed / Lapsed |