US3493060A
Expired / Lapsed
US
⏱️ 0.0 years remaining
In situ recovery of earth minerals and derivative compounds by laser
Assignee: Woods Res & Dev
•
Filing: 1968-04-16
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Granted: 1970-02-03
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Expires: 1988-04-16
Abstract
No abstract record available.
Inventors
- 👤 John C Van Dyk
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 16:36
CPC Classifications
B; B23; B23K; B23K26/00; B23K26/14; B23K26/142; B23K26/12; B23K26/123; B23K26/36; B23K26/38; B23K26/382; B23K26/40; E; E21; E21B; E21B43/00; E21B43/16; E21B43/24; E21B7/00; E21B7/14; E21B7/15; E21C; E21C41/00; E21C41/26; E21C41/31; B23K2103/00; B23K2103/50
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1342741A
Cited
US1510655A
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US1898926A
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US1993641A
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US2969226A
Cited
US3241611A
Cited
US3297876A
Cited
US3291215A
Cited
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 |