US2639554A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of and apparatus for sealing ampoules
Assignee: Individual
•
Filing: 1950-08-18
•
Granted: 1953-05-26
•
Expires: 1970-08-18
Abstract
No abstract record available.
Inventors
- 👤 Frederick W Zons
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 00:02
CPC Classifications
B; B65; B65B; B65B7/00; B65B7/16; B65B7/161
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US276897A
Cited
US1967603A
Cited
US2097233A
Cited
US2044566A
Cited
US2037989A
Cited
US2270152A
Cited
US2258408A
Cited
US2414781A
Cited
US2421801A
Cited
US2464765A
Cited
US2481474A
Cited
US2512929A
Cited
US2506866A
Cited
US2457158A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-05-25 | 1956-11-24 | 1957-05-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-05-25 | 1960-11-24 | 1961-05-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-05-25 | 1964-11-24 | 1965-05-26 | $7700.00 | Window Closed / Lapsed |