Patent US2587522A successfully refreshed from Google Patents.
US2587522A
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Leaf spring construction
Assignee: PAUL MALLAMAS JR
•
Filing: 1947-07-25
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Granted: 1952-02-26
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Expires: 1967-07-25
Abstract
No abstract record available.
Inventors
- 👤 Jr William T Pilkington
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 16:29
CPC Classifications
F; F16; F16F; F16F1/00; F16F1/02; F16F1/18; F16F1/182; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49609; Y10T29/49826; Y10T29/49908; Y10T29/49915; Y10T29/49924; Y10T29/49936; Y10T29/49938; Y10T403/00; Y10T403/49; Y10T403/4991; Y10T403/70; Y10T403/71; Y10T403/7123
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US718733A
Cited
US1330923A
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US1294338A
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US1377430A
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US1379798A
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US1410439A
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US1530729A
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FR692763A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-02-25 | 1955-08-27 | 1956-02-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-02-25 | 1959-08-27 | 1960-02-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-02-25 | 1963-08-27 | 1964-02-26 | $7700.00 | Window Closed / Lapsed |