US2749999A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Floor drain extension
Assignee: J A ZURN Manufacturing Co
•
Filing: 1951-10-26
•
Granted: 1956-06-12
•
Expires: 1971-10-26
Abstract
No abstract record available.
Inventors
- 👤 John H Schmid
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 06:05
CPC Classifications
E; E03; E03F; E03F5/00; E03F5/04; E03F5/0407; E03F5/0409; E03F2005/0412; E03F2005/0413; Y; Y10; Y10T; Y10T137/00; Y10T137/6851; Y10T137/6966; Y10T137/6969; Y10T137/6988
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1275922A
Cited
US1873275A
Cited
US1973304A
Cited
US2190532A
Cited
US2519843A
Cited
US2478976A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-06-12 | 1959-12-12 | 1960-06-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-06-12 | 1963-12-12 | 1964-06-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-06-12 | 1967-12-12 | 1968-06-12 | $7700.00 | Window Closed / Lapsed |