US3486556A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Underwater connecting apparatus
Assignee: S and S Trust
•
Filing: 1967-05-01
•
Granted: 1969-12-30
•
Expires: 1987-05-01
Abstract
No abstract record available.
Inventors
- 👤 Harry L Burgess
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 01:52
CPC Classifications
E; E21; E21B; E21B33/00; E21B33/02; E21B33/03; E21B33/035; E21B33/038; E21B33/0387
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2873810A
Cited
US2990851A
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US3086590A
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US3065763A
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US3142337A
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US3147992A
Cited
US3237220A
Cited
US3183946A
Cited
US3236302A
Cited
US3180420A
Cited
US3324943A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-12-29 | 1973-06-30 | 1973-12-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-12-29 | 1977-06-30 | 1977-12-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-12-29 | 1981-06-30 | 1981-12-30 | $7700.00 | Window Closed / Lapsed |