US3469408A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for launching and extracting spheroids in underwater pipelines
Assignee: Rank Cintel Ltd
•
Filing: 1968-01-05
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Granted: 1969-09-30
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Expires: 1988-01-05
Abstract
No abstract record available.
Inventors
- 👤 Walter J Bloemhard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 18:38
CPC Classifications
B; B67; B67D; B67D7/00; B67D7/06; B67D7/32; B67D7/3245; B67D7/3263; E; E21; E21B; E21B43/00; E21B43/01; E21B43/34; E21B43/35; E21B43/36; F; F16; F16L; F16L55/00; F16L55/26; F16L55/46; Y; Y10; Y10T; Y10T137/00; Y10T137/4891
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US3125116A
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US2190330A
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US3121954A
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US3148689A
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US3135278A
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US3186014A
Cited
US3246666A
Cited
US3291217A
Cited
US3384512A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-09-29 | 1973-03-31 | 1973-09-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-09-29 | 1977-03-31 | 1977-09-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-09-29 | 1981-03-31 | 1981-09-30 | $7700.00 | Window Closed / Lapsed |