Patent US2641919A successfully refreshed from Google Patents.
US2641919A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cooper
Assignee: —
•
Filing: —
•
Granted: 1953-06-16
•
Expires: 1970-06-16
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 10:41
CPC Classifications
E; E05; E05B; E05B27/00; E05B27/005; E05B17/00; E05B17/04; E05B27/02; E05B27/08; E05B29/00; E05B35/00; E05B35/08; E05B9/00; E05B9/08; E05B9/084; Y; Y10; Y10T; Y10T70/00; Y10T70/70; Y10T70/7441; Y10T70/7446; Y10T70/7452
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) | 1956-06-15 | 1956-12-15 | 1957-06-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-06-15 | 1960-12-15 | 1961-06-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-06-15 | 1964-12-15 | 1965-06-16 | $7700.00 | Window Closed / Lapsed |