US3500301A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sonic detection apparatus
Assignee: International Business Machines Corp
•
Filing: 1967-10-23
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Granted: 1970-03-10
•
Expires: 1987-10-23
Abstract
No abstract record available.
Inventors
- 👤 Johann H Meier
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 05:22
CPC Classifications
G; G01; G01B; G01B17/00; G01B17/02; Y; Y10; Y10S; Y10S367/00; Y10S367/901
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2640190A
Cited
US3008332A
Cited
US3021481A
Cited
US3237150A
Cited
US3140612A
Cited
US3184969A
Cited
US3290490A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-03-09 | 1973-09-08 | 1974-03-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-03-09 | 1977-09-08 | 1978-03-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-03-09 | 1981-09-08 | 1982-03-10 | $7700.00 | Window Closed / Lapsed |