Patent US1337732A successfully refreshed from Google Patents.
US1337732A
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Magnetic gearing
Assignee: AT&T Inc
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Filing: 1916-11-07
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Granted: 1920-04-20
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Expires: 1936-11-07
Abstract
No abstract record available.
Inventors
- 👤 Hugh M Stoller
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 20:57
CPC Classifications
H; H02; H02K; H02K49/00; H02K49/10; H02K49/102; F; F16; F16H; F16H49/00; F16H49/005; Y; Y10; Y10T; Y10T74/00; Y10T74/19; Y10T74/19642; Y10T74/19698; Y10T74/19823; Y10T74/19828; Y10T74/19949; Y10T74/19953
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) | 1923-04-20 | 1923-10-20 | 1924-04-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1927-04-20 | 1927-10-20 | 1928-04-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1931-04-20 | 1931-10-20 | 1932-04-20 | $7700.00 | Window Closed / Lapsed |