US2800575A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Adjustable navigational lights for small vessels
Assignee: Individual
•
Filing: 1955-04-28
•
Granted: 1957-07-23
•
Expires: 1975-04-28
Abstract
No abstract record available.
Inventors
- 👤 Paul M Robertson
- 👤 Jr William H Hall
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 07:03
CPC Classifications
B; B63; B63B; B63B45/00; B63B45/02
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1280370A
Cited
US1418769A
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US1797540A
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US1847652A
Cited
US2420362A
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US2536799A
Cited
US2557893A
Cited
US2593171A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-07-22 | 1961-01-21 | 1961-07-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-07-22 | 1965-01-21 | 1965-07-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-07-22 | 1969-01-21 | 1969-07-23 | $7700.00 | Window Closed / Lapsed |