Patent US2744429A successfully refreshed from Google Patents.
US2744429A
Expired / Lapsed
US
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Tool for and method of forming a flow restriction in a conduit
Assignee: Individual
•
Filing: 1952-06-18
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Granted: 1956-05-08
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Expires: 1972-06-18
Abstract
No abstract record available.
Inventors
- 👤 John S Seely
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 19:48
CPC Classifications
F; F25; F25B; F25B41/00; F25B41/30; F25B41/37; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/4935; Y10T29/49359; Y10T29/49428; Y10T29/49446
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US217364A
Cited
US279020A
Cited
US2285275A
Cited
US1120466A
Cited
US1619084A
Cited
US1853549A
Cited
US2147032A
Cited
US2158855A
Cited
US2285099A
Cited
US2413547A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-05-08 | 1959-11-07 | 1960-05-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-05-08 | 1963-11-07 | 1964-05-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-05-08 | 1967-11-07 | 1968-05-08 | $7700.00 | Window Closed / Lapsed |