Patent US2600631A successfully refreshed from Google Patents.
US2600631A
Expired / Lapsed
US
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Resilient spring envelope for collapsible tubes
Assignee: Individual
•
Filing: 1949-08-10
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Granted: 1952-06-17
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Expires: 1969-08-10
Abstract
No abstract record available.
Inventors
- 👤 Freedman Emiel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 03:57
CPC Classifications
B; B65; B65D; B65D35/00; B65D35/24; B65D35/28
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
GB133993A
Cited
US103640A
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US1089683A
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US1510848A
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US1654549A
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US1731703A
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US2076048A
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US2204778A
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US2444003A
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US2444004A
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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) | 1955-06-17 | 1955-12-17 | 1956-06-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-06-17 | 1959-12-17 | 1960-06-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-06-17 | 1963-12-17 | 1964-06-17 | $7700.00 | Window Closed / Lapsed |