US2787442A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Tool for contracting culvert bands
Assignee: Individual
•
Filing: 1956-01-16
•
Granted: 1957-04-02
•
Expires: 1976-01-16
Abstract
No abstract record available.
Inventors
- 👤 William R Lewis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 15:08
CPC Classifications
B; B25; B25B; B25B25/00; B25B25/005; B25B5/00; B25B5/06; B25B5/12; E; E01; E01F; E01F5/00; E01F5/005; F; F16; F16L; F16L33/00; F16L33/02; F16L33/12; Y; Y10; Y10S; Y10S285/00; Y10S285/903
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US569056A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-04-01 | 1960-10-01 | 1961-04-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-04-01 | 1964-10-01 | 1965-04-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-04-01 | 1968-10-01 | 1969-04-02 | $7700.00 | Window Closed / Lapsed |