Patent US3057004A successfully refreshed from Google Patents.
US3057004A
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US
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Hydraulic door closer
Assignee: Individual
•
Filing: 1960-05-26
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Granted: 1962-10-09
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Expires: 1980-05-26
Abstract
No abstract record available.
Inventors
- 👤 Kaloust P Sogoian
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 20:29
CPC Classifications
E; E05; E05F; E05F3/00; E05F3/04; E05F3/10; E05F3/108; E05Y; E05Y2900/00; E05Y2900/10; E05Y2900/13; E05Y2900/132; Y; Y10; Y10T; Y10T137/00; Y10T137/7722; Y10T137/7837; Y10T137/7847
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US991889A
Cited
GB444046A
Cited
US2284424A
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US2421595A
Cited
US2903733A
Cited
US2957734A
Cited
US2920338A
Cited
US2930070A
Cited
US3025558A
Cited
US2996754A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-10-08 | 1966-04-09 | 1966-10-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-10-08 | 1970-04-09 | 1970-10-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-10-08 | 1974-04-09 | 1974-10-09 | $7700.00 | Window Closed / Lapsed |