Patent US2764973A successfully refreshed from Google Patents.
US2764973A
Expired / Lapsed
US
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Apparatus for handling and liquefying asphalt
Assignee: Individual
•
Filing: 1954-01-07
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Granted: 1956-10-02
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Expires: 1974-01-07
Abstract
No abstract record available.
Inventors
- 👤 William J Miller
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 14:29
CPC Classifications
B; B67; B67D; B67D7/00; B67D7/06; B67D7/80; C; C10; C10C; C10C3/00; C10C3/10; C10C3/12; C11; C11B; C11B1/00; C11B1/12
Claims Analysis
Total Claims: 0
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US2472594A
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US2548177A
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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) | 1959-10-02 | 1960-04-02 | 1960-10-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-10-02 | 1964-04-02 | 1964-10-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-10-02 | 1968-04-02 | 1968-10-02 | $7700.00 | Window Closed / Lapsed |