Patent US2677830A successfully refreshed from Google Patents.
US2677830A
Expired / Lapsed
US
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Ventilating means for toilet bowls
Assignee: Individual
•
Filing: 1950-03-09
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Granted: 1954-05-11
•
Expires: 1970-03-09
Abstract
No abstract record available.
Inventors
- 👤 Clyde H Allen
- 👤 Leon G Mckay
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 10:29
CPC Classifications
A; A47; A47K; A47K13/00; A47K13/24; A47K13/26; 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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Cited
US2526278A
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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) | 1957-05-10 | 1957-11-09 | 1958-05-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-05-10 | 1961-11-09 | 1962-05-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-05-10 | 1965-11-09 | 1966-05-11 | $7700.00 | Window Closed / Lapsed |