US3404400A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Signalling method and apparatus
Assignee: Gulf General Atomic Inc
•
Filing: 1967-04-17
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Granted: 1968-10-01
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Expires: 1987-04-17
Abstract
No abstract record available.
Inventors
- 👤 Jr Park H Miller
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 06:57
CPC Classifications
G; G01; G01V; G01V1/00; G01V1/28; G01V1/36; G01V1/364; G01S; G01S13/00; G01S13/02; G01S13/06; G01S13/08; G01S13/10; G01S13/26; G01S13/28; G01S13/284; G01S13/286; G01V2210/00; G01V2210/20; G01V2210/21
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2624876A
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US3114884A
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US3174032A
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US3156914A
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US3217324A
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US3176296A
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US3249940A
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US3271765A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-10-01 | 1972-04-01 | 1972-10-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-10-01 | 1976-04-01 | 1976-10-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-10-01 | 1980-04-01 | 1980-10-01 | $7700.00 | Window Closed / Lapsed |