US3389558A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Jet propulsion apparatus
Assignee: Hall Marine Corp
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Filing: 1966-12-15
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Granted: 1968-06-25
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Expires: 1986-12-15
Abstract
No abstract record available.
Inventors
- 👤 Kimball P Hall
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 19:25
CPC Classifications
B; B63; B63H; B63H20/00; B63H11/00; B63H11/02; B63H11/04; B63H11/08; B63H1/00; B63H1/02; B63H1/12; B63H1/14; B63H1/16; B63H2011/081
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) | 1971-06-25 | 1971-12-25 | 1972-06-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-06-25 | 1975-12-25 | 1976-06-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-06-25 | 1979-12-25 | 1980-06-25 | $7700.00 | Window Closed / Lapsed |