Patent US2675728A successfully refreshed from Google Patents.
US2675728A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Support resilience equalizer
Assignee: —
•
Filing: —
•
Granted: 1954-04-20
•
Expires: 1971-04-20
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 10:57
CPC Classifications
G; G10; G10C; G10C3/00; G10C3/12; Y; Y10; Y10T; Y10T74/00; Y10T74/18; Y10T74/18888
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US367955A
Cited
US669729A
Cited
US1657169A
Cited
US1775865A
Cited
US1813751A
Cited
US2246086A
Cited
US2243834A
Cited
US2253782A
Cited
US2472740A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-04-19 | 1957-10-19 | 1958-04-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-04-19 | 1961-10-19 | 1962-04-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-04-19 | 1965-10-19 | 1966-04-20 | $7700.00 | Window Closed / Lapsed |