US2019841A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process of sealing containers
Assignee: Individual
•
Filing: 1934-06-08
•
Granted: 1935-11-05
•
Expires: 1954-06-08
Abstract
No abstract record available.
Inventors
- 👤 Irving E Black
- 👤 Frederick J Hoffer
- 👤 Henry B Silver
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 18:58
CPC Classifications
B; B67; B67B; B67B5/00; B67B5/03; B67B5/05; Y; Y10; Y10S; Y10S425/00; Y10S425/809; Y10T; Y10T156/00; Y10T156/10; Y10T156/1002; Y10T156/1028; Y10T156/1033
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1938-11-04 | 1939-05-06 | 1939-11-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1942-11-04 | 1943-05-06 | 1943-11-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1946-11-04 | 1947-05-06 | 1947-11-05 | $7700.00 | Window Closed / Lapsed |