US2668786A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Corrugated packing sheet
Assignee: Packaging Materials Corp
•
Filing: 1949-06-22
•
Granted: 1954-02-09
•
Expires: 1969-06-22
Abstract
No abstract record available.
Inventors
- 👤 Helen M Swope
- 👤 Gubernator Grace
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 04:15
CPC Classifications
B; B65; B65D; B65D65/00; B65D65/38; B65D65/44; B29; B29C; B29C53/00; B29C53/22; B29C53/24; B29C53/28; B29C53/285; Y; Y10; Y10T; Y10T428/00; Y10T428/24; Y10T428/24479; Y10T428/24595
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US2245014A
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US2169505A
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US2209537A
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US2221200A
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US2253718A
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US2475868A
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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) | 1957-02-08 | 1957-08-10 | 1958-02-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-02-08 | 1961-08-10 | 1962-02-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-02-08 | 1965-08-10 | 1966-02-09 | $7700.00 | Window Closed / Lapsed |