US2461623A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Visual observation and silhouette projection apparatus
Assignee: Mojonnier Bros Co
•
Filing: 1944-04-22
•
Granted: 1949-02-15
•
Expires: 1964-04-22
Abstract
No abstract record available.
Inventors
- 👤 George D Armerding
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 11:36
CPC Classifications
G; G01; G01D; G01D7/00; G01D7/02; G01D7/04; G01D7/06
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US1315446A
Cited
US1204401A
Cited
US1228685A
Cited
US1737126A
Cited
US1740130A
Cited
US1893421A
Cited
US1976783A
Cited
US1899886A
Cited
US2131039A
Cited
US2273591A
Cited
US2245970A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-02-15 | 1952-08-16 | 1953-02-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-02-15 | 1956-08-16 | 1957-02-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-02-15 | 1960-08-16 | 1961-02-15 | $7700.00 | Window Closed / Lapsed |