Patent US3493036A successfully refreshed from Google Patents.
US3493036A
Expired / Lapsed
US
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Gear pump and heating and cooling means therefor
Assignee: EIDP Inc
•
Filing: 1968-06-28
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Granted: 1970-02-03
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Expires: 1988-06-28
Abstract
No abstract record available.
Inventors
- 👤 Alfred Nelson Good
- 👤 Joseph Dodsworth Weed
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 10:16
CPC Classifications
F; F04; F04C; F04C13/00; F04C13/001; F04C13/002; F04C15/00; F04C15/0096
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) | 1973-02-02 | 1973-08-04 | 1974-02-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-02-02 | 1977-08-04 | 1978-02-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-02-02 | 1981-08-04 | 1982-02-03 | $7700.00 | Window Closed / Lapsed |