US3455115A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Floating structures
Assignee: ROBERT H WATTS
•
Filing: 1966-04-20
•
Granted: 1969-07-15
•
Expires: 1986-04-20
Abstract
No abstract record available.
Inventors
- 👤 Robert H Watts
- 👤 Walter E Ellis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 00:56
CPC Classifications
E; E02; E02B; E02B3/00; E02B3/04; E02B3/06; E02B3/062; E02B3/064
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1652703A
Cited
US1723213A
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US1871475A
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US3009326A
Cited
US3024753A
Cited
US2962996A
Cited
US3074238A
Cited
US3210110A
Cited
US3152568A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-07-14 | 1973-01-13 | 1973-07-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-07-14 | 1977-01-13 | 1977-07-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-07-14 | 1981-01-13 | 1981-07-15 | $7700.00 | Window Closed / Lapsed |