US2479842A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Means for sterilizing flush type toilet bowls
Assignee: Individual
•
Filing: 1947-02-20
•
Granted: 1949-08-23
•
Expires: 1967-02-20
Abstract
No abstract record available.
Inventors
- 👤 John D Kirwan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 21:22
CPC Classifications
E; E03; E03D; E03D9/00; E03D9/02; E03D9/03; E03D9/033; E03D9/037; E03D2009/024
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1170387A
Cited
US2345284A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-08-22 | 1953-02-21 | 1953-08-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-08-22 | 1957-02-21 | 1957-08-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-08-22 | 1961-02-21 | 1961-08-23 | $7700.00 | Window Closed / Lapsed |