US2669187A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Glandless pump and motor unit
Assignee: Individual
•
Filing: 1949-04-27
•
Granted: 1954-02-16
•
Expires: 1969-04-27
Abstract
No abstract record available.
Inventors
- 👤 Guyer Ernest
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 07:37
CPC Classifications
F; F04; F04D; F04D13/00; F04D13/02; F04D13/06; F04D13/0606; F04D13/0613
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1114727A
Cited
FR485670A
Cited
US1263633A
Cited
US1433037A
Cited
US1720333A
Cited
US2301063A
Cited
US2423825A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-02-15 | 1957-08-17 | 1958-02-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-02-15 | 1961-08-17 | 1962-02-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-02-15 | 1965-08-17 | 1966-02-16 | $7700.00 | Window Closed / Lapsed |