US2415520A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Work holder
Assignee: Individual
•
Filing: 1944-07-08
•
Granted: 1947-02-11
•
Expires: 1964-07-08
Abstract
No abstract record available.
Inventors
- 👤 John T Obecny
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 18:30
CPC Classifications
B; B25; B25B; B25B5/00; B25B5/06; B25B5/061; B25B5/065
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US864862A
Cited
US1085785A
Cited
US1102314A
Cited
US1196772A
Cited
DE535905C
Cited
GB538132A
Cited
US2339800A
Cited
US2335258A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1950-02-10 | 1950-08-12 | 1951-02-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1954-02-10 | 1954-08-12 | 1955-02-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1958-02-10 | 1958-08-12 | 1959-02-11 | $7700.00 | Window Closed / Lapsed |