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Patent US1297236A successfully refreshed from Google Patents.
US1297236A
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Magnetic-clutch-controlling method and apparatus.
Assignee: HARTFORD FAIRMONT CO
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Filing: 1915-12-16
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Granted: 1919-03-11
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Expires: 1935-12-16
Abstract
No abstract record available.
Inventors
- 👤 Karl E Peiler
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 14:17
CPC Classifications
H; H02; H02K; H02K49/00; H02K49/02; H02K49/04; Y; Y10; Y10T; Y10T29/00; Y10T29/53; Y10T29/53987
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 |