US2640620A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Collapsible container
Assignee: HAMLIN METAL PRODUCTS Co
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Filing: 1950-11-04
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Granted: 1953-06-02
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Expires: 1970-11-04
Abstract
No abstract record available.
Inventors
- 👤 Mercer D Walklet
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 01:42
CPC Classifications
B; B65; B65D; B65D19/00; B65D19/02; B65D19/06; B65D19/08; B65D19/12; B65D2519/00; B65D2519/00004; B65D2519/00009; B65D2519/00014; B65D2519/00024; B65D2519/00049; B65D2519/00059; B65D2519/00119; B65D2519/00129; B65D2519/00154; B65D2519/00164; B65D2519/00258; B65D2519/00283; B65D2519/00288; B65D2519/00313; B65D2519/00328; B65D2519/00338; B65D2519/00398; B65D2519/00432; B65D2519/00452; B65D2519/00492; B65D2519/00502; B65D2519/00547; B65D2519/00577; B65D2519/00582; B65D2519/00587; B65D2519/00636; B65D2519/00641; B65D2519/00646; B65D2519/00656; B65D2519/00736; B65D2519/00865; B65D2519/00875; B65D2519/00925; B65D2519/00935; B65D2519/00955; B65D2519/0096; B65D2519/00965; B65D2519/00975
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US557120A
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US687807A
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US1011794A
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US2553273A
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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) | 1956-06-01 | 1956-12-01 | 1957-06-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-06-01 | 1960-12-01 | 1961-06-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-06-01 | 1964-12-01 | 1965-06-02 | $7700.00 | Window Closed / Lapsed |