Patent US2736956A successfully refreshed from Google Patents.
US2736956A
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Method for making bobbins
Assignee: Individual
•
Filing: 1952-03-04
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Granted: 1956-03-06
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Expires: 1972-03-04
Abstract
No abstract record available.
Inventors
- 👤 William F Stahl
- 👤 Fred V Collins
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 18:54
CPC Classifications
H; H01; H01F; H01F5/00; H01F5/02; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49826; Y10T29/49885; Y10T29/49908; Y10T29/49938; Y10T29/4994
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US2006540A
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US2027961A
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US2249091A
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US2219576A
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US2333340A
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US2348696A
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US2642090A
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US2644651A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-03-06 | 1959-09-05 | 1960-03-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-03-06 | 1963-09-05 | 1964-03-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-03-06 | 1967-09-05 | 1968-03-06 | $7700.00 | Window Closed / Lapsed |