Patent US3144431A successfully refreshed from Google Patents.
Patent US2048501A successfully refreshed from Google Patents.
US2048501A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Power transmitter
Assignee: Singer Co
•
Filing: 1935-03-22
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Granted: 1936-07-21
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Expires: 1955-03-22
Abstract
No abstract record available.
Inventors
- 👤 Herbert J Goosman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 06:17
CPC Classifications
D; D05; D05B; D05B69/00; D05B69/10; D05B69/12; D05B69/125; H; H02; H02K; H02K7/00; H02K7/10; H02K7/108
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) | 1939-07-21 | 1940-01-20 | 1940-07-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1943-07-21 | 1944-01-20 | 1944-07-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1947-07-21 | 1948-01-20 | 1948-07-21 | $7700.00 | Window Closed / Lapsed |