Patent US216810A successfully refreshed from Google Patents.
US2602201A
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Assignee: WILLIAM D CAROTHERS
•
Filing: 1947-06-26
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Granted: 1952-07-08
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Expires: 1967-06-26
Abstract
No abstract record available.
Inventors
- 👤 Frank W Ofeldt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 20:21
CPC Classifications
E; E05; E05F; E05F5/00; E05F5/06; Y; Y10; Y10T; Y10T24/00; Y10T24/30
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US345451A
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US350931A
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US733071A
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US952854A
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US1037593A
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US1051508A
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US1190310A
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US1842734A
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FR772785A
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US2496084A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-07-08 | 1956-01-07 | 1956-07-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-07-08 | 1960-01-07 | 1960-07-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-07-08 | 1964-01-07 | 1964-07-08 | $7700.00 | Window Closed / Lapsed |