US2558443A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Bathroom unit
Assignee: Individual
•
Filing: 1947-12-04
•
Granted: 1951-06-26
•
Expires: 1967-12-04
Abstract
No abstract record available.
Inventors
- 👤 Boris A Krenov
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 13:44
CPC Classifications
E; E03; E03C; E03C1/00; E03C1/01
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2087121A
Cited
US1763209A
Cited
US2037895A
Cited
US2220482A
Cited
US2198605A
Cited
US2331592A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-06-25 | 1954-12-25 | 1955-06-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-06-25 | 1958-12-25 | 1959-06-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-06-25 | 1962-12-25 | 1963-06-26 | $7700.00 | Window Closed / Lapsed |