US2644585A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Leader drain trap
Assignee: Individual
•
Filing: 1950-10-10
•
Granted: 1953-07-07
•
Expires: 1970-10-10
Abstract
No abstract record available.
Inventors
- 👤 Louis F Ambrosi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 03:20
CPC Classifications
E; E04; E04D; E04D13/00; E04D13/04; E04D13/08; E04D2013/086; E04D2013/0866
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US104450A
Cited
US192696A
Cited
US335366A
Cited
US694440A
Cited
US794325A
Cited
US1136538A
Cited
US1532013A
Cited
US1565233A
Cited
US2419501A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-07-06 | 1957-01-05 | 1957-07-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-07-06 | 1961-01-05 | 1961-07-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-07-06 | 1965-01-05 | 1965-07-07 | $7700.00 | Window Closed / Lapsed |