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US2655280A
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US
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Bung or stopper
Assignee: ASTELL LAB SERVICE Co Ltd
•
Filing: 1950-03-31
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Granted: 1953-10-13
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Expires: 1970-03-31
Abstract
No abstract record available.
Inventors
- 👤 John R Cuttell
- 👤 Thomas R Ashton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 16:27
CPC Classifications
B; B01; B01L; B01L3/00; B01L3/50; B01L3/508; B01L3/5082; B01L3/50825
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US645722A
Cited
US1024370A
Cited
US1188031A
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US1327519A
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US2097571A
Cited
US2353674A
Cited
US2526225A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-10-12 | 1957-04-13 | 1957-10-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-10-12 | 1961-04-13 | 1961-10-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-10-12 | 1965-04-13 | 1965-10-13 | $7700.00 | Window Closed / Lapsed |