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US2556331A
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Tubular ampoule closure
Assignee: Individual
•
Filing: 1946-04-01
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Granted: 1951-06-12
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Expires: 1966-04-01
Abstract
No abstract record available.
Inventors
- 👤 Marshall L Lockhart
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 22:16
CPC Classifications
B; B01; B01L; B01L3/00; B01L3/50; B01L3/508; B01L3/5082; B01L3/50825; A; A61; A61M; A61M5/00; A61M5/178; A61M5/28; A61M5/31; A61M5/3148
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1848711A
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US1817003A
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US1833598A
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US1929247A
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US2153594A
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US2132763A
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US2314167A
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US2408323A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-06-11 | 1954-12-11 | 1955-06-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-06-11 | 1958-12-11 | 1959-06-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-06-11 | 1962-12-11 | 1963-06-12 | $7700.00 | Window Closed / Lapsed |