US2808785A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Rotary pumps or compressors
Assignee: GE Healthcare UK Ltd
•
Filing: 1956-03-15
•
Granted: 1957-10-08
•
Expires: 1976-03-15
Abstract
No abstract record available.
Inventors
- 👤 Hilton John Leslie
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 16:28
CPC Classifications
C; C22; C22B; C22B26/00; C22B26/10
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1127668A
Cited
US1442828A
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US1709580A
Cited
US1780109A
Cited
US2044873A
Cited
GB659600A
Cited
US2701532A
Cited
FR1098815A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-10-07 | 1961-04-08 | 1961-10-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-10-07 | 1965-04-08 | 1965-10-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-10-07 | 1969-04-08 | 1969-10-08 | $7700.00 | Window Closed / Lapsed |