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US2634867A
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Assignee: Individual
•
Filing: 1949-08-03
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Granted: 1953-04-14
•
Expires: 1969-08-03
Abstract
No abstract record available.
Inventors
- 👤 John T Shields
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 11:06
CPC Classifications
F; F25; F25D; F25D25/00; F25D25/02; F25D2325/00; F25D2325/023; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49616; Y10T29/4962
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US571575A
Cited
US707983A
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US1143655A
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US1460928A
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US1567446A
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US1641523A
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US2110726A
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US2109724A
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US2198964A
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US2274125A
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US2309212A
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US2312015A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-04-13 | 1956-10-13 | 1957-04-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-04-13 | 1960-10-13 | 1961-04-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-04-13 | 1964-10-13 | 1965-04-14 | $7700.00 | Window Closed / Lapsed |