Patent US2557134A successfully refreshed from Google Patents.
US2557134A
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Breechblock return mechanism
Assignee: Rheinmetall Air Defence AG
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Filing: 1942-01-07
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Granted: 1951-06-19
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Expires: 1962-01-07
Abstract
No abstract record available.
Inventors
- 👤 Mudespacher Paul
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 15:14
CPC Classifications
F; F41; F41A; F41A25/00; F41A25/10; F41A25/12; F41A3/00; F41A3/12; F41A3/54; F41A3/64; F41A3/78; F41A3/82; F41A5/00; F41A5/02
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
DE316279C
Cited
US863770A
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US891778A
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US958545A
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US2016646A
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US2093169A
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GB517697A
Cited
GB512228A
Cited
CH215689A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-06-18 | 1954-12-18 | 1955-06-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-06-18 | 1958-12-18 | 1959-06-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-06-18 | 1962-12-18 | 1963-06-19 | $7700.00 | Window Closed / Lapsed |