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US2553160A
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Assignee: Individual
•
Filing: 1948-06-07
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Granted: 1951-05-15
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Expires: 1968-06-07
Abstract
No abstract record available.
Inventors
- 👤 Arps Mervin William
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 17:18
CPC Classifications
G; G03; G03B; G03B23/00; G03B23/08; G03B23/12; G03B23/125
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US616826A
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US838075A
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US1350042A
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US1444339A
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US1697753A
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US1744647A
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US2178155A
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US2239032A
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US2436162A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-05-14 | 1954-11-13 | 1955-05-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-05-14 | 1958-11-13 | 1959-05-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-05-14 | 1962-11-13 | 1963-05-15 | $7700.00 | Window Closed / Lapsed |