US2589128A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Roofing knife
Assignee: Individual
•
Filing: 1947-04-24
•
Granted: 1952-03-11
•
Expires: 1967-04-24
Abstract
No abstract record available.
Inventors
- 👤 Alex A Podjaski
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 02:03
CPC Classifications
E; E04; E04D; E04D15/00; E04D15/04
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US723848A
Cited
US1208608A
Cited
US1559780A
Cited
US1500550A
Cited
US1738496A
Cited
US2051199A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-03-11 | 1955-09-10 | 1956-03-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-03-11 | 1959-09-10 | 1960-03-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-03-11 | 1963-09-10 | 1964-03-11 | $7700.00 | Window Closed / Lapsed |