Patent US2787233A successfully refreshed from Google Patents.
US2787233A
Expired / Lapsed
US
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Fabric seams
Assignee: Singer Co
•
Filing: 1953-10-30
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Granted: 1957-04-02
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Expires: 1973-10-30
Abstract
No abstract record available.
Inventors
- 👤 Walling Francis Lawrence
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 11:59
CPC Classifications
D; D05; D05B; D05B93/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US583401A
Cited
US1934328A
Cited
US2135779A
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US2248907A
Cited
US2448495A
Cited
US2595152A
Cited
DE820529C
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-04-01 | 1960-10-01 | 1961-04-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-04-01 | 1964-10-01 | 1965-04-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-04-01 | 1968-10-01 | 1969-04-02 | $7700.00 | Window Closed / Lapsed |