US2775951A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Device for indicating the position of non-buoyant objects
Assignee: Individual
•
Filing: 1952-07-03
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Granted: 1957-01-01
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Expires: 1972-07-03
Abstract
No abstract record available.
Inventors
- 👤 Allen K Billmeyer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 11:43
CPC Classifications
F; F42; F42B; F42B19/00; F42B19/36; B; B63; B63B; B63B2201/00; B63B2201/24
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-01-01 | 1960-07-02 | 1961-01-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-01-01 | 1964-07-02 | 1965-01-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-01-01 | 1968-07-02 | 1969-01-01 | $7700.00 | Window Closed / Lapsed |