US2460841A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Projection and plotting device
Assignee: Individual
•
Filing: 1945-03-15
•
Granted: 1949-02-08
•
Expires: 1965-03-15
Abstract
No abstract record available.
Inventors
- 👤 William L Morey
- 👤 Robert A Taylor
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 06:02
CPC Classifications
G; G01; G01C; G01C21/00; G01C21/20; G01C21/22
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US320823A
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US984929A
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US1215425A
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US1228685A
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US1285279A
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US1334145A
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US1550174A
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US1705951A
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GB316569A
Cited
US1949422A
Cited
FR726342A
Cited
FR773083A
Cited
US2222414A
Cited
US2181134A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-02-08 | 1952-08-09 | 1953-02-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-02-08 | 1956-08-09 | 1957-02-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-02-08 | 1960-08-09 | 1961-02-08 | $7700.00 | Window Closed / Lapsed |