US3393644A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Concrete pumping station with a ballast trough
Assignee: Omega Northeast Inc
•
Filing: 1967-09-25
•
Granted: 1968-07-23
•
Expires: 1987-09-25
Abstract
No abstract record available.
Inventors
- 👤 Jack D Boswell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 13:18
CPC Classifications
F; F04; F04D; F04D29/00; F04D29/60; F04D29/605; Y; Y10; Y10T; Y10T137/00; Y10T137/2931; Y10T137/3115; Y10T137/3127; Y10T137/6851; Y10T137/6966; Y10T137/6991; Y10T137/7287; Y10T137/7313
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US712030A
Cited
US1520230A
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US1700504A
Cited
US2029765A
Cited
US2817299A
Cited
US2883853A
Cited
US3247864A
Cited
US3275021A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-07-23 | 1972-01-22 | 1972-07-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-07-23 | 1976-01-22 | 1976-07-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-07-23 | 1980-01-22 | 1980-07-23 | $7700.00 | Window Closed / Lapsed |