US2098208A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ventilator for toilets
Assignee: ROCHESTER VENTOILET Co
•
Filing: 1935-04-27
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Granted: 1937-11-02
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Expires: 1955-04-27
Abstract
No abstract record available.
Inventors
- 👤 Ernest C Madden
- 👤 Bert F Cooper
- 👤 Earl R Cuykendall
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 10:54
CPC Classifications
E; E03; E03D; E03D9/00; E03D9/04; E03D9/05; E03D9/052; Y; Y10; Y10T; Y10T137/00; Y10T137/0971; Y10T137/108; Y10T137/7722; Y10T137/7837; Y10T137/7898; Y10T137/7903
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) | 1940-11-01 | 1941-05-03 | 1941-11-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1944-11-01 | 1945-05-03 | 1945-11-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1948-11-01 | 1949-05-03 | 1949-11-02 | $7700.00 | Window Closed / Lapsed |