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 01:06
CPC Classifications
B; B65; B65B; B65B13/00; B65B13/18; B65B13/24; B65B13/34; B65B13/345
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US238417A
Cited
US1408846A
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US1505754A
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US1665323A
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US1886046A
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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 |