US2857982A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Lubricator
Assignee: Eimco Corp
•
Filing: 1955-02-16
•
Granted: 1958-10-28
•
Expires: 1975-02-16
Abstract
No abstract record available.
Inventors
- 👤 Daniel M Schwartz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 20:22
CPC Classifications
B; B25; B25D; B25D17/00; B25D17/26; B25D17/265; F; F16; F16N; F16N7/00; F16N7/30; F16N7/32; F16N7/34
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1012114A
Cited
US1600262A
Cited
GB322955A
Cited
US1939563A
Cited
US2245274A
Cited
US2220301A
Cited
US2511016A
Cited
US2613067A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-10-27 | 1962-04-28 | 1962-10-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-10-27 | 1966-04-28 | 1966-10-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-10-27 | 1970-04-28 | 1970-10-28 | $7700.00 | Window Closed / Lapsed |