US2207317A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Centrifugal pump
Assignee: GLENN M FREEMAN
•
Filing: 1938-08-05
•
Granted: 1940-07-09
•
Expires: 1958-08-05
Abstract
No abstract record available.
Inventors
- 👤 Walter J Gear
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 18:01
CPC Classifications
F; F04; F04D; F04D29/00; F04D29/08; F04D29/16; F04D29/165; F04D29/167; F04D7/00; F04D7/02; F04D7/04
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1943-07-09 | 1944-01-08 | 1944-07-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1947-07-09 | 1948-01-08 | 1948-07-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1951-07-09 | 1952-01-08 | 1952-07-09 | $7700.00 | Window Closed / Lapsed |