US2643745A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sectional member
Assignee: Individual
•
Filing: 1950-04-07
•
Granted: 1953-06-30
•
Expires: 1970-04-07
Abstract
No abstract record available.
Inventors
- 👤 Olszewski Thaddeus
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 23:31
CPC Classifications
F; F16; F16G; F16G13/00; F16G13/18; F16G13/20; E; E01; E01D; E01D15/00; E01D15/12; E01D15/122; E04; E04C; E04C3/00; E04C3/005
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-06-29 | 1956-12-29 | 1957-06-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-06-29 | 1960-12-29 | 1961-06-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-06-29 | 1964-12-29 | 1965-06-30 | $7700.00 | Window Closed / Lapsed |