US1297271A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of manufacturing cylindrical magnet-frames and the like.
Assignee: General Electric Co
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Filing: 1917-10-12
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Granted: 1919-03-11
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Expires: 1937-10-12
Abstract
No abstract record available.
Inventors
- 👤 George E Stevens
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 18:20
CPC Classifications
B; B21; B21D; B21D53/00; E; E04; E04B; E04B1/00; E04B1/18; E04B1/24; E04B1/2403; E04B2001/2415; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49002; Y10T29/4902; Y10T29/49075; Y10T29/49616; Y10T29/49623; Y10T29/49636; Y10T29/49643; Y10T29/49647; Y10T29/49668; Y10T29/49671; Y10T29/49673; Y10T29/49826; Y10T29/49893
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) | 1922-03-10 | 1922-09-09 | 1923-03-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1926-03-10 | 1926-09-09 | 1927-03-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1930-03-10 | 1930-09-09 | 1931-03-11 | $7700.00 | Window Closed / Lapsed |