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Patent US2687730A successfully refreshed from Google Patents.
US2687730A
Expired / Lapsed
US
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Ampoule
Assignee: Individual
•
Filing: 1951-12-04
•
Granted: 1954-08-31
•
Expires: 1971-12-04
Abstract
No abstract record available.
Inventors
- 👤 Jr George N Hein
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 14:54
CPC Classifications
A; A61; A61J; A61J1/00; A61J1/05; A61J1/06; A61J1/062; A61M; A61M5/00; A61M5/178; A61M5/30
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2168437A
Cited
GB643887A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-08-30 | 1958-03-01 | 1958-08-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-08-30 | 1962-03-01 | 1962-08-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-08-30 | 1966-03-01 | 1966-08-31 | $7700.00 | Window Closed / Lapsed |