US2616615A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Oilless pump
Assignee: De Laval Separator Co
•
Filing: 1949-07-01
•
Granted: 1952-11-04
•
Expires: 1969-07-01
Abstract
No abstract record available.
Inventors
- 👤 Walter A Scott
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 11:56
CPC Classifications
F; F04; F04C; F04C29/00; F04C29/06; F04C29/063; F01; F01C; F01C21/00; F01C21/08; F01C21/0809; F05; F05B; F05B2280/00; F05B2280/60; F05C; F05C2203/00; Y; Y10; Y10S; Y10S417/00; Y10S417/01
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
FR620045A
Cited
US1854692A
Cited
CH125787A
Cited
GB294653A
Cited
CH147225A
Cited
US2004563A
Cited
US2057381A
Cited
US2020525A
Cited
FR846828A
Cited
US2272926A
Cited
US2251784A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-11-04 | 1956-05-05 | 1956-11-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-11-04 | 1960-05-05 | 1960-11-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-11-04 | 1964-05-05 | 1964-11-04 | $7700.00 | Window Closed / Lapsed |