Patent US981601A successfully refreshed from Google Patents.
US981601A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Means for controlling electrically-driven centrifugal machines.
Assignee: American Tool & Machine Co
•
Filing: 1907-04-03
•
Granted: 1911-01-17
•
Expires: 1927-04-03
Abstract
No abstract record available.
Inventors
- 👤 Comfort A Adams
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 20:15
CPC Classifications
H; H02; H02P; H02P3/00; H02P3/06; H02P3/08; H02P3/12
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
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) | 1914-01-16 | 1914-07-18 | 1915-01-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1918-01-16 | 1918-07-18 | 1919-01-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1922-01-16 | 1922-07-18 | 1923-01-17 | $7700.00 | Window Closed / Lapsed |