US1476978A
Expired / Lapsed
US
⏱️ 0.0 years remaining
System of control
Assignee: Allis Chalmers Corp
•
Filing: 1919-09-20
•
Granted: 1923-12-11
•
Expires: 1939-09-20
Abstract
No abstract record available.
Inventors
- 👤 Jeffrey Fraser
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 13:51
CPC Classifications
H; H05; H05B; H05B7/00; H05B7/02; H05B7/144; Y; Y02; Y02P; Y02P10/00; Y02P10/25
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) | 1926-12-10 | 1927-06-11 | 1927-12-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1930-12-10 | 1931-06-11 | 1931-12-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1934-12-10 | 1935-06-11 | 1935-12-11 | $7700.00 | Window Closed / Lapsed |