Patent US3800794A successfully refreshed from Google Patents.
US3476057A
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Aggregate pumping apparatus
Assignee: Individual
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Filing: 1967-09-08
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Granted: 1969-11-04
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Expires: 1987-09-08
Abstract
No abstract record available.
Inventors
- 👤 Philip W Mcelroy
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 15:07
CPC Classifications
F; F04; F04B; F04B15/00; F04B15/02; F04B15/023; F01; F01L; F01L23/00; F01L25/00; F01L25/08; F04B1/00; F04B1/02; F04B7/00; F04B7/0003; F04B7/0011; F04B9/00; F04B9/08; F04B9/10; F04B9/109; F04B9/117; F04B9/1176; F04B9/1178; Y; Y10; Y10S; Y10S417/00; Y10S417/90; Y10T; Y10T137/00; Y10T137/8593; Y10T137/86493; Y10T137/86863; Y10T137/86871
Claims Analysis
Total Claims: 0
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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) | 1972-11-03 | 1973-05-05 | 1973-11-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-11-03 | 1977-05-05 | 1977-11-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-11-03 | 1981-05-05 | 1981-11-04 | $7700.00 | Window Closed / Lapsed |