Patent US2661835A successfully refreshed from Google Patents.
US2661835A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Package cushioning and sealing means
Assignee: Paper Patents Co
•
Filing: 1948-10-29
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Granted: 1953-12-08
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Expires: 1968-10-29
Abstract
No abstract record available.
Inventors
- 👤 Ralph V Grishaber
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 19:47
CPC Classifications
B; B65; B65D; B65D85/00; B65D85/54; B65D85/544
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US771267A
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US899035A
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GB191309788A
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US1585846A
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US1601547A
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CH135518A
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GB396418A
Cited
GB413779A
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US1991640A
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US2064122A
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US2339326A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-12-07 | 1957-06-08 | 1957-12-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-12-07 | 1961-06-08 | 1961-12-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-12-07 | 1965-06-08 | 1965-12-08 | $7700.00 | Window Closed / Lapsed |