Patent US3824564A successfully refreshed from Google Patents.
US842829A
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US
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Process of making commutators.
Assignee: Landis and Gyr Metering Inc
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Filing: 1905-01-23
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Granted: 1907-01-29
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Expires: 1925-01-23
Abstract
No abstract record available.
Inventors
- 👤 Thomas Duncan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 05:46
CPC Classifications
H; H01; H01R; H01R43/00; H01R43/06; H01R43/08; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49002; Y10T29/49009; Y10T29/49011
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) | 1910-01-28 | 1910-07-30 | 1911-01-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1914-01-28 | 1914-07-30 | 1915-01-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1918-01-28 | 1918-07-30 | 1919-01-29 | $7700.00 | Window Closed / Lapsed |