Patent US3429294A successfully refreshed from Google Patents.
US3429294A
Expired / Lapsed
US
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Sound transmitter for gaseous operating fluid
Assignee: Kockums Mekaniska Verkstads AB
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Filing: 1966-08-18
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Granted: 1969-02-25
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Expires: 1986-08-18
Abstract
No abstract record available.
Inventors
- 👤 Bengt Lennart Holm
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 23:27
CPC Classifications
G; G10; G10K; G10K7/00; G10K7/06; G10K5/00; G10K9/00; G10K9/18
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1029521A
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US1085354A
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US2352467A
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US2273968A
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US2579784A
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US2658470A
Cited
US2884892A
Cited
US3117552A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-02-25 | 1972-08-26 | 1973-02-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-02-25 | 1976-08-26 | 1977-02-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-02-25 | 1980-08-26 | 1981-02-25 | $7700.00 | Window Closed / Lapsed |