Patent US3915329A successfully refreshed from Google Patents.
Patent US2563949A successfully refreshed from Google Patents.
US2563949A
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US
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Cylinder construction
Assignee: Individual
•
Filing: 1946-09-14
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Granted: 1951-08-14
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Expires: 1966-09-14
Abstract
No abstract record available.
Inventors
- 👤 Roy M Magnuson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 13:41
CPC Classifications
F; F04; F04B; F04B53/00; F04B53/16; F04B53/162; F04B53/164; F04B1/00; F04B1/02; F04B15/00; F04B15/02; F04B53/10; F04B53/102; F04B53/1022; F04B53/1025; F04B9/00; F04B9/02
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US2058618A
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US2118317A
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US2197271A
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US2259432A
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US2273403A
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US2331462A
Cited
US2417828A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-08-13 | 1955-02-12 | 1955-08-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-08-13 | 1959-02-12 | 1959-08-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-08-13 | 1963-02-12 | 1963-08-14 | $7700.00 | Window Closed / Lapsed |