US3480326A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Mechanical deep sea nodule harvester
Assignee: Bethlehem Steel Corp
•
Filing: 1968-12-18
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Granted: 1969-11-25
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Expires: 1988-12-18
Abstract
No abstract record available.
Inventors
- 👤 George W Sheary
- 👤 James E Steele
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 03:20
CPC Classifications
E; E02; E02F; E02F7/00; E02F7/04; E02F3/00; E02F3/04; E02F3/88; E02F3/8858; E02F3/90; E02F3/92; E02F3/9212; E02F3/9225; E02F3/9237; E21; E21C; E21C50/00; Y; Y10; Y10S; Y10S423/00; Y10S423/04
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) | 1972-11-24 | 1973-05-26 | 1973-11-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-11-24 | 1977-05-26 | 1977-11-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-11-24 | 1981-05-26 | 1981-11-25 | $7700.00 | Window Closed / Lapsed |