US2550482A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sighting mechanism
Assignee: —
•
Filing: —
•
Granted: 1951-04-24
•
Expires: 1968-04-24
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 09:08
CPC Classifications
F; F41; F41G; F41G5/00; F41G5/14; F41G5/16; F41A; F41A27/00; F41G1/00; F41G1/46
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1936442A
Cited
DE616248C
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-04-23 | 1954-10-23 | 1955-04-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-04-23 | 1958-10-23 | 1959-04-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-04-23 | 1962-10-23 | 1963-04-24 | $7700.00 | Window Closed / Lapsed |