US2436849A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Downward stroke air evacuating jar sealing apparatus
Assignee: Individual
•
Filing: 1943-12-31
•
Granted: 1948-03-02
•
Expires: 1963-12-31
Abstract
No abstract record available.
Inventors
- 👤 Halton A Billetter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 17:27
CPC Classifications
B; B67; B67B; B67B3/00; B67B3/24; F; F04; F04B; F04B33/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US13291A
Cited
US29582A
Cited
US817538A
Cited
US1013230A
Cited
US1356224A
Cited
US1414283A
Cited
US2339791A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1951-03-02 | 1951-09-01 | 1952-03-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-03-02 | 1955-09-01 | 1956-03-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-03-02 | 1959-09-01 | 1960-03-02 | $7700.00 | Window Closed / Lapsed |