US996253A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Dynamo-electric machine.
Assignee: Individual
•
Filing: 1911-01-09
•
Granted: 1911-06-27
•
Expires: 1931-01-09
Abstract
No abstract record available.
Inventors
- 👤 Frederic Ayres Johnson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 15:14
CPC Classifications
H; H02; H02K; H02K23/00; H02K23/40; H02K23/44
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) | 1914-06-26 | 1914-12-26 | 1915-06-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1918-06-26 | 1918-12-26 | 1919-06-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1922-06-26 | 1922-12-26 | 1923-06-27 | $7700.00 | Window Closed / Lapsed |