Patent US2797714A successfully refreshed from Google Patents.
US2797714A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sealing device
Assignee: Acme Steel Co
•
Filing: 1952-01-16
•
Granted: 1957-07-02
•
Expires: 1972-01-16
Abstract
No abstract record available.
Inventors
- 👤 Chester M Macchesney
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 17:37
CPC Classifications
B; B65; B65B; B65B13/00; B65B13/18; B65B13/24; B65B13/34; B65B13/345
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US238417A
Cited
US1408846A
Cited
US1505754A
Cited
US1665323A
Cited
US1886046A
Cited
US1924845A
Cited
US2040576A
Cited
GB482787A
Cited
US2312400A
Cited
US2349608A
Cited
US2368969A
Cited
US2612803A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-07-01 | 1960-12-31 | 1961-07-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-07-01 | 1964-12-31 | 1965-07-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-07-01 | 1968-12-31 | 1969-07-02 | $7700.00 | Window Closed / Lapsed |