US3301048A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sea state recorder
Assignee: Individual
•
Filing: 1964-04-20
•
Granted: 1967-01-31
•
Expires: 1984-04-20
Abstract
No abstract record available.
Inventors
- 👤 Jr Harry D Felsenthal
- 👤 Walter W Nakashima
- 👤 William E Zecher
- 👤 Eugene F Ecker
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 10:20
CPC Classifications
G; G01; G01C; G01C13/00; G01C13/002
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2447069A
Cited
US2869108A
Cited
US2768368A
Cited
US2845796A
Cited
US2839920A
Cited
US3110178A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-01-30 | 1970-08-01 | 1971-01-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-01-30 | 1974-08-01 | 1975-01-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-01-30 | 1978-08-01 | 1979-01-31 | $7700.00 | Window Closed / Lapsed |