US3528290A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Depth meter attachment for underwater pressure gauges
Assignee: PITTMAN PRODUCTS Inc
•
Filing: 1969-08-15
•
Granted: 1970-09-15
•
Expires: 1989-08-15
Abstract
No abstract record available.
Inventors
- 👤 Samuel G Lecocq
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 03:39
CPC Classifications
G; G01; G01C; G01C13/00; G01C13/008; G01L; G01L19/00; G01L19/16; B; B63; B63C; B63C11/00; B63C11/02
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2394987A
Cited
US2935873A
Cited
US2986038A
Cited
US3188864A
Cited
US3203244A
Cited
US3375718A
Cited
US3377860A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-09-14 | 1974-03-16 | 1974-09-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-09-14 | 1978-03-16 | 1978-09-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-09-14 | 1982-03-16 | 1982-09-15 | $7700.00 | Window Closed / Lapsed |