US3525310A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Attachment for sewing machine
Assignee: WT Gensheimer Inc
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Filing: 1968-05-07
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Granted: 1970-08-25
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Expires: 1988-05-07
Abstract
No abstract record available.
Inventors
- 👤 William T Gensheimer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 17:31
CPC Classifications
D; D05; D05B; D05B35/00; D05B35/06; D05B35/062; D05B35/02; D05D; D05D2303/00; D05D2303/02; D05D2303/04
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-08-24 | 1974-02-23 | 1974-08-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-08-24 | 1978-02-23 | 1978-08-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-08-24 | 1982-02-23 | 1982-08-25 | $7700.00 | Window Closed / Lapsed |