US2997220A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Collapsible double walled cartons
Assignee: Federal Paper Board Co Inc
•
Filing: 1955-12-02
•
Granted: 1961-08-22
•
Expires: 1975-12-02
Abstract
No abstract record available.
Inventors
- 👤 Marshall I Williamson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 14:39
CPC Classifications
B; B65; B65D; B65D5/00; B65D5/42; B65D5/44; B65D5/50; B65D5/5002; B65D5/5016
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2533070A
Cited
US2620116A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-08-21 | 1965-02-20 | 1965-08-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-08-21 | 1969-02-20 | 1969-08-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-08-21 | 1973-02-20 | 1973-08-22 | $7700.00 | Window Closed / Lapsed |