US2836276A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electric sewing machine drives
Assignee: Individual
•
Filing: 1953-09-28
•
Granted: 1958-05-27
•
Expires: 1973-09-28
Abstract
No abstract record available.
Inventors
- 👤 Heimann Karl Willi
- 👤 Schwab Olga Brunhilde
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 14:54
CPC Classifications
D; D05; D05B; D05B69/00; D05B69/22; Y; Y10; Y10T; Y10T74/00; Y10T74/19; Y10T74/19023; Y10T74/1914
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US1099325A
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US1243986A
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US2281569A
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US2423243A
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US2404850A
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US2604864A
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US2598633A
Cited
US2747715A
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BE509072A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-05-26 | 1961-11-25 | 1962-05-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-05-26 | 1965-11-25 | 1966-05-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-05-26 | 1969-11-25 | 1970-05-27 | $7700.00 | Window Closed / Lapsed |