US2608174A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Adjustable safety device for boat anchors
Assignee: Individual
•
Filing: 1949-02-23
•
Granted: 1952-08-26
•
Expires: 1969-02-23
Abstract
No abstract record available.
Inventors
- 👤 Norman S Sponenburg
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 19:08
CPC Classifications
B; B63; B63B; B63B21/00; B63B21/22; Y; Y10; Y10T; Y10T24/00; Y10T24/39; Y10T24/3936; Y10T24/394; Y10T24/3942
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US19131A
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US248331A
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US296152A
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US1309975A
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US1017153A
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US1107934A
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US1618634A
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US1709910A
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US1800851A
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US2299178A
Cited
US2426881A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-08-26 | 1956-02-25 | 1956-08-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-08-26 | 1960-02-25 | 1960-08-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-08-26 | 1964-02-25 | 1964-08-26 | $7700.00 | Window Closed / Lapsed |