US631769A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electric hammer.
Assignee: PATRICK H CLARKE
•
Filing: 1898-09-19
•
Granted: 1899-08-29
•
Expires: 1918-09-19
Abstract
No abstract record available.
Inventors
- 👤 John Anderson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 20:01
CPC Classifications
H; H02; H02K; H02K33/00; H02K33/02; H02K33/04; Y; Y10; Y10T; Y10T83/00; Y10T83/869; Y10T83/8765
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) | 1902-08-29 | 1903-02-28 | 1903-08-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1906-08-29 | 1907-02-28 | 1907-08-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1910-08-29 | 1911-02-28 | 1911-08-30 | $7700.00 | Window Closed / Lapsed |