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US2545506A
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Assignee: Individual
•
Filing: 1945-10-17
•
Granted: 1951-03-20
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Expires: 1965-10-17
Abstract
No abstract record available.
Inventors
- 👤 Raymond A Walsh
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 23:48
CPC Classifications
F; F04; F04B; F04B15/00; F04B15/02; F01; F01L; F01L21/00; F01L21/04; F01L23/00; F04B13/00; F04B13/02; F04B53/00; F04B53/14; F04B53/16; F04B53/162; F04B53/164; F04B9/00; F04B9/08; F04B9/10; F04B9/103; F04B9/105; Y; Y10; Y10S; Y10S417/00; Y10S417/90
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US547538A
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US1550933A
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US1529918A
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US1647425A
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US1818187A
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US1792646A
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US1774967A
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US2367185A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-03-19 | 1954-09-18 | 1955-03-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-03-19 | 1958-09-18 | 1959-03-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-03-19 | 1962-09-18 | 1963-03-20 | $7700.00 | Window Closed / Lapsed |