US2659972A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Projection compass
Assignee: Individual
•
Filing: 1950-06-21
•
Granted: 1953-11-24
•
Expires: 1970-06-21
Abstract
No abstract record available.
Inventors
- 👤 Edward E Norris
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 09:01
CPC Classifications
B; B25; B25H; B25H7/00; B25H7/005; Y; Y10; Y10S; Y10S33/00; Y10S33/01
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US233424A
Cited
DE545026C
Cited
US784903A
Cited
US804867A
Cited
US1286770A
Cited
US1660616A
Cited
US1743024A
Cited
US1698154A
Cited
US1991117A
Cited
US2464901A
Cited
US2436542A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-11-23 | 1957-05-25 | 1957-11-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-11-23 | 1961-05-25 | 1961-11-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-11-23 | 1965-05-25 | 1965-11-24 | $7700.00 | Window Closed / Lapsed |