US2976783A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Slip-form paving machine
Assignee: Individual
•
Filing: 1954-10-14
•
Granted: 1961-03-28
•
Expires: 1974-10-14
Abstract
No abstract record available.
Inventors
- 👤 Glen E Perkins
- 👤 George W Dale
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 08:49
CPC Classifications
E; E01; E01C; E01C19/00; E01C19/22; E01C19/30; E01C19/34; E01C19/40; E01C19/405
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US2029431A
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US2054436A
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US2252717A
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US2162665A
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US2380435A
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US2440518A
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FR1063468A
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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) | 1964-03-27 | 1964-09-26 | 1965-03-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-03-27 | 1968-09-26 | 1969-03-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-03-27 | 1972-09-26 | 1973-03-28 | $7700.00 | Window Closed / Lapsed |