US1222999A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Commutator-brush.
Assignee: HERBERT S MILLS
•
Filing: 1916-03-20
•
Granted: 1917-04-17
•
Expires: 1936-03-20
Abstract
No abstract record available.
Inventors
- 👤 Henry K Sandell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 03:31
CPC Classifications
H; H01; H01R; H01R39/00; H01R39/02; H01R39/18; H01R39/26
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) | 1920-04-16 | 1920-10-16 | 1921-04-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1924-04-16 | 1924-10-16 | 1925-04-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1928-04-16 | 1928-10-16 | 1929-04-17 | $7700.00 | Window Closed / Lapsed |