US2660937A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for widening roadways
Assignee: Individual
•
Filing: 1950-07-10
•
Granted: 1953-12-01
•
Expires: 1970-07-10
Abstract
No abstract record available.
Inventors
- 👤 James R Breeden
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 09:33
CPC Classifications
E; E01; E01C; E01C19/00; E01C19/12; E01C19/18; E01C19/185
Claims Analysis
Total Claims: 0
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US2544113A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-11-30 | 1957-06-01 | 1957-12-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-11-30 | 1961-06-01 | 1961-12-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-11-30 | 1965-06-01 | 1965-12-01 | $7700.00 | Window Closed / Lapsed |