Patent US2980978A successfully refreshed from Google Patents.
US2980978A
Expired / Lapsed
US
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Apparatus for mechanically compacting paving mixtures and other materials
Assignee: Individual
•
Filing: 1956-05-08
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Granted: 1961-04-25
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Expires: 1976-05-08
Abstract
No abstract record available.
Inventors
- 👤 Bruce G Marshall
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 11:40
CPC Classifications
G; G01; G01N; G01N1/00; G01N1/28; G01N1/286; G01N2203/00; G01N2203/0058; G01N2203/0076; G01N2203/0085; G01N33/00; G01N33/42
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US872519A
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US943966A
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US997100A
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GB257343A
Cited
US1718338A
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US2541981A
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US2534421A
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US2712679A
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US2755532A
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US2675597A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-04-24 | 1964-10-24 | 1965-04-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-04-24 | 1968-10-24 | 1969-04-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-04-24 | 1972-10-24 | 1973-04-25 | $7700.00 | Window Closed / Lapsed |