US3416456A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Centrifugal pump
Assignee: Individual
•
Filing: 1966-11-14
•
Granted: 1968-12-17
•
Expires: 1986-11-14
Abstract
No abstract record available.
Inventors
- 👤 Henry M Pollak
- 👤 Robert S Pollak
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 20:41
CPC Classifications
F; F04; F04D; F04D9/00; F04D9/004; F04D9/005; F04D9/02; Y; Y10; Y10S; Y10S415/00; Y10S415/915
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2291760A
Cited
US2945448A
Cited
US2951449A
Cited
US3272137A
Cited
US3270678A
Cited
US3276385A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-12-17 | 1972-06-17 | 1972-12-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-12-17 | 1976-06-17 | 1976-12-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-12-17 | 1980-06-17 | 1980-12-17 | $7700.00 | Window Closed / Lapsed |