Patent US5239860A successfully refreshed from Google Patents.
US2978690A
Expired / Lapsed
US
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Expendable lead line sounder
Assignee: Individual
•
Filing: 1953-04-10
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Granted: 1961-04-04
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Expires: 1973-04-10
Abstract
No abstract record available.
Inventors
- 👤 Franz N D Kurie
- 👤 Louis A Cartwright
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 19:52
CPC Classifications
B; B06; B06B; B06B3/00; B06B3/04
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US242249A
Cited
US1286155A
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GB141673A
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US1866902A
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US2464834A
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US2414091A
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US2519418A
Cited
US2610506A
Cited
US2586828A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-04-03 | 1964-10-03 | 1965-04-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-04-03 | 1968-10-03 | 1969-04-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-04-03 | 1972-10-03 | 1973-04-04 | $7700.00 | Window Closed / Lapsed |