US3458853A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Underwater guidance method and apparatus
Assignee: E G AND G Inc
•
Filing: 1967-08-08
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Granted: 1969-07-29
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Expires: 1987-08-08
Abstract
No abstract record available.
Inventors
- 👤 Charles K Daniels
- 👤 John P Mccarthy
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 06:26
CPC Classifications
E; E21; E21B; E21B41/00; E21B41/0007; E21B41/0014; G; G01; G01S; G01S15/00; G01S15/02; G01S15/06; G01S15/46; G01S15/87; G01S15/876; G10; G10K; G10K11/00; G10K11/18; G10K11/26; G10K11/28
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) | 1972-07-28 | 1973-01-27 | 1973-07-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-07-28 | 1977-01-27 | 1977-07-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-07-28 | 1981-01-27 | 1981-07-29 | $7700.00 | Window Closed / Lapsed |