US2779258A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Road construction machine
Assignee: Blaw Knox Co
•
Filing: 1950-09-25
•
Granted: 1957-01-29
•
Expires: 1970-09-25
Abstract
No abstract record available.
Inventors
- 👤 James W Johnson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 11:54
CPC Classifications
E; E01; E01C; E01C19/00; E01C19/48; E01C19/4833; E01C19/4853; E01C19/486
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US2225015A
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US2188553A
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US2209710A
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US2251095A
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US2441532A
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US2491275A
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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) | 1960-01-29 | 1960-07-30 | 1961-01-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-01-29 | 1964-07-30 | 1965-01-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-01-29 | 1968-07-30 | 1969-01-29 | $7700.00 | Window Closed / Lapsed |