Patent US2973129A successfully refreshed from Google Patents.
US2973129A
Expired / Lapsed
US
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Dual locking construction for paperboard wrappers
Assignee: Continental Can Co Inc
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Filing: 1957-11-14
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Granted: 1961-02-28
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Expires: 1977-11-14
Abstract
No abstract record available.
Inventors
- 👤 Orison W Stone
- 👤 Laurie H Campbell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 20:58
CPC Classifications
B; B65; B65D; B65D5/00; B65D5/20; B65D5/2052; B65D5/2057; B65D5/30
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1525360A
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US2323782A
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US2361603A
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US2658660A
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US2708545A
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US2527784A
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US2786572A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-02-28 | 1964-08-29 | 1965-02-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-02-28 | 1968-08-29 | 1969-02-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-02-28 | 1972-08-29 | 1973-02-28 | $7700.00 | Window Closed / Lapsed |