Patent US2580762A successfully refreshed from Google Patents.
US2580762A
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US
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Assignee: Individual
•
Filing: 1950-04-28
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Granted: 1952-01-01
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Expires: 1970-04-28
Abstract
No abstract record available.
Inventors
- 👤 Joseph R Grenier
- 👤 Jr Ernest W Dormeyer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 12:35
CPC Classifications
B; B65; B65D; B65D59/00; F; F16; F16L; F16L57/00; F16L57/005; Y; Y10; Y10S; Y10S411/00; Y10S411/904; Y10S411/908; Y10S411/91
Claims Analysis
Total Claims: 0
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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) | 1954-12-31 | 1955-07-02 | 1956-01-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-12-31 | 1959-07-02 | 1960-01-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-12-31 | 1963-07-02 | 1964-01-01 | $7700.00 | Window Closed / Lapsed |