Patent US1801043A successfully refreshed from Google Patents.
US1801043A
Expired / Lapsed
US
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Variable-speed driving or transmitting mechanism
Assignee: Baker Perkins Inc
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Filing: 1928-12-05
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Granted: 1931-04-14
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Expires: 1948-12-05
Abstract
No abstract record available.
Inventors
- 👤 Harber Laurence Seymour
- 👤 Pointon John Edward
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 19:43
CPC Classifications
F; F16; F16H; F16H9/00; F16H9/02; F16H9/24; Y; Y10; Y10S; Y10S474/00; Y10S474/90
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) | 1934-04-13 | 1934-10-13 | 1935-04-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1938-04-13 | 1938-10-13 | 1939-04-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1942-04-13 | 1942-10-13 | 1943-04-14 | $7700.00 | Window Closed / Lapsed |