US3026522A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Diving helmet
Assignee: Individual
•
Filing: 1958-07-02
•
Granted: 1962-03-27
•
Expires: 1978-07-02
Abstract
No abstract record available.
Inventors
- 👤 Julio Carl J Di
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 22:47
CPC Classifications
B; B63; B63C; B63C11/00; B63C11/02; B63C11/04; B63C2011/046
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
NL44924C
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US1463926A
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US1520049A
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US2478126A
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US2569451A
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US2465998A
Cited
US2647264A
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US2695609A
Cited
US2785674A
Cited
US2869133A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-03-26 | 1965-09-25 | 1966-03-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-03-26 | 1969-09-25 | 1970-03-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-03-26 | 1973-09-25 | 1974-03-27 | $7700.00 | Window Closed / Lapsed |