Patent US2607515A successfully refreshed from Google Patents.
US2607515A
Expired / Lapsed
US
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Closure for collapsible tubes, with pressure-responsive, resiliently biased outlet element
Assignee: Individual
•
Filing: 1946-12-18
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Granted: 1952-08-19
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Expires: 1966-12-18
Abstract
No abstract record available.
Inventors
- 👤 Robert A Felburg
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 14:49
CPC Classifications
B; B65; B65D; B65D35/00; B65D35/14; B65D35/20; B65D47/00; B65D47/04; B65D47/20; B65D47/2018; B65D47/2056; B65D47/2062; B65D47/2068
Claims Analysis
Total Claims: 0
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US2302538A
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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) | 1955-08-19 | 1956-02-18 | 1956-08-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-08-19 | 1960-02-18 | 1960-08-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-08-19 | 1964-02-18 | 1964-08-19 | $7700.00 | Window Closed / Lapsed |