US2556435A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Means for cooling lubricating oil in submerged motors
Assignee: Layne and Bowler Inc
•
Filing: 1950-04-27
•
Granted: 1951-06-12
•
Expires: 1970-04-27
Abstract
No abstract record available.
Inventors
- 👤 Kenneth E Moehrl
- 👤 Jr Charles B Porter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 15:25
CPC Classifications
H; H02; H02K; H02K9/00; H02K9/19; F; F04; F04D; F04D29/00; F04D29/06; F04D29/061; F05; F05B; F05B2240/00; F05B2240/60; F05B2240/61
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-06-11 | 1954-12-11 | 1955-06-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-06-11 | 1958-12-11 | 1959-06-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-06-11 | 1962-12-11 | 1963-06-12 | $7700.00 | Window Closed / Lapsed |