US3449761A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Heated underwater diving suit
Assignee: RICHARD W LONG
•
Filing: 1967-04-17
•
Granted: 1969-06-17
•
Expires: 1987-04-17
Abstract
No abstract record available.
Inventors
- 👤 Richard W Long
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 23:03
CPC Classifications
B; B63; B63C; B63C11/00; B63C11/02; B63C11/28
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
FR805173A
Cited
US2573414A
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US2540547A
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US2512990A
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US2657396A
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US2773262A
Cited
US2981954A
Cited
US2966684A
Cited
US3348236A
Cited
US3391405A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-06-16 | 1972-12-16 | 1973-06-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-06-16 | 1976-12-16 | 1977-06-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-06-16 | 1980-12-16 | 1981-06-17 | $7700.00 | Window Closed / Lapsed |