US2721038A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Coil winding machine
Assignee: George Rattray & Co Inc
•
Filing: 1951-05-03
•
Granted: 1955-10-18
•
Expires: 1971-05-03
Abstract
No abstract record available.
Inventors
- 👤 Harold C Pasini
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 10:13
CPC Classifications
B; B21; B21F; B21F3/00; B21F3/02; B21F3/04; H; H01; H01J; H01J19/00; H01J2893/00; H01J2893/0001; H01J2893/0012; H01J2893/0026
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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GB606430A
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US2500605A
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US2498234A
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US2474620A
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US2668670A
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US2568465A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1958-10-17 | 1959-04-18 | 1959-10-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-10-17 | 1963-04-18 | 1963-10-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-10-17 | 1967-04-18 | 1967-10-18 | $7700.00 | Window Closed / Lapsed |