Patent US2431138A successfully refreshed from Google Patents.
Patent US1675980A successfully refreshed from Google Patents.
US1675980A
Expired / Lapsed
US
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Silent door closer
Assignee: EVEREDY Co
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Filing: 1927-10-15
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Granted: 1928-07-03
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Expires: 1947-10-15
Abstract
No abstract record available.
Inventors
- 👤 Harry J Lebherz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 19:04
CPC Classifications
E; E05; E05F; E05F3/00; E05F3/02; E05Y; E05Y2900/00; E05Y2900/10; E05Y2900/13; E05Y2900/132
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) | 1931-07-03 | 1932-01-02 | 1932-07-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1935-07-03 | 1936-01-02 | 1936-07-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1939-07-03 | 1940-01-02 | 1940-07-03 | $7700.00 | Window Closed / Lapsed |