US2589216A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Aircraft apparatus for simulating a line of sight-defining structure
Assignee: Unisys Corp
•
Filing: 1943-11-23
•
Granted: 1952-03-18
•
Expires: 1963-11-23
Abstract
No abstract record available.
Inventors
- 👤 Waldemar A Ayres
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 17:33
CPC Classifications
G; G01; G01S; G01S7/00; G01S7/02; G01S7/40; G01S1/00; G01S1/02; G01S1/04; G01S1/06
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US2027530A
Cited
GB497147A
Cited
US2151549A
Cited
US2262033A
Cited
US2225046A
Cited
US2262245A
Cited
US2293899A
Cited
US2405231A
Cited
US2422100A
Cited
US2395966A
Cited
US2408848A
Cited
US2408050A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-03-18 | 1955-09-17 | 1956-03-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-03-18 | 1959-09-17 | 1960-03-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-03-18 | 1963-09-17 | 1964-03-18 | $7700.00 | Window Closed / Lapsed |