US2511047A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sewing unit
Assignee: Union Special Machine Co
•
Filing: 1946-10-22
•
Granted: 1950-06-13
•
Expires: 1966-10-22
Abstract
No abstract record available.
Inventors
- 👤 Norman V Christensen
- 👤 Sauer George
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 04:00
CPC Classifications
D; D05; D05B; D05B1/00; D05B1/02; D05B1/06; D05D; D05D2207/00; D05D2207/02; D05D2207/04
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US262500A
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US269215A
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US680660A
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US1232152A
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US1351244A
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US2059013A
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US2063841A
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US2347782A
Cited
US2183366A
Cited
US2374731A
Cited
US2418429A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-06-12 | 1953-12-12 | 1954-06-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-06-12 | 1957-12-12 | 1958-06-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-06-12 | 1961-12-12 | 1962-06-13 | $7700.00 | Window Closed / Lapsed |