US3475915A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Underwater structures
Assignee: Technautics Corp
•
Filing: 1968-04-16
•
Granted: 1969-11-04
•
Expires: 1988-04-16
Abstract
No abstract record available.
Inventors
- 👤 Richard Caplan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 23:55
CPC Classifications
B; B63; B63B; B63B3/00; B63B3/13
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US2752928A
Cited
US2771899A
Cited
US2934075A
Cited
US3258883A
Cited
US3343324A
Cited
US3338001A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-11-03 | 1973-05-05 | 1973-11-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-11-03 | 1977-05-05 | 1977-11-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-11-03 | 1981-05-05 | 1981-11-04 | $7700.00 | Window Closed / Lapsed |