US3487484A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Tuned floating bodies
Assignee: Lockheed Martin Corp
•
Filing: 1967-09-05
•
Granted: 1970-01-06
•
Expires: 1987-09-05
Abstract
No abstract record available.
Inventors
- 👤 John F Holmes
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 17:00
CPC Classifications
E; E21; E21B; E21B15/00; E21B15/02; B; B63; B63B; B63B22/00; B63B22/18
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US996458A
Cited
US1865095A
Cited
US1800811A
Cited
US2411202A
Cited
US2911658A
Cited
US3191202A
Cited
US3275976A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-01-05 | 1973-07-07 | 1974-01-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-01-05 | 1977-07-07 | 1978-01-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-01-05 | 1981-07-07 | 1982-01-06 | $7700.00 | Window Closed / Lapsed |