US3468385A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Underwater power tool
Assignee: SALVATORE J PENZA
•
Filing: 1968-05-29
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Granted: 1969-09-23
•
Expires: 1988-05-29
Abstract
No abstract record available.
Inventors
- 👤 Salvatore J Penza
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 16:38
CPC Classifications
E; E21; E21B; E21B7/00; E21B7/18; E21B7/185; Y; Y10; Y10S; Y10S173/00; Y10S173/01; Y10S415/00; Y10S415/904
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-09-22 | 1973-03-24 | 1973-09-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-09-22 | 1977-03-24 | 1977-09-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-09-22 | 1981-03-24 | 1981-09-23 | $7700.00 | Window Closed / Lapsed |