US2644955A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sweat pan for flush tanks
Assignee: Individual
•
Filing: 1950-05-18
•
Granted: 1953-07-14
•
Expires: 1970-05-18
Abstract
No abstract record available.
Inventors
- 👤 Ewing F Matthews
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 13:00
CPC Classifications
E; E03; E03D; E03D1/00; E03D1/01
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US1129390A
Cited
US1164864A
Cited
US1669056A
Cited
US2131874A
Cited
US2156174A
Cited
US2180902A
Cited
US2509881A
Cited
US2542338A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-07-13 | 1957-01-12 | 1957-07-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-07-13 | 1961-01-12 | 1961-07-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-07-13 | 1965-01-12 | 1965-07-14 | $7700.00 | Window Closed / Lapsed |