Patent US916476A successfully refreshed from Google Patents.
US916476A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrical shot-firing machine for mines.
Assignee: JEFF T BOUCHER
•
Filing: 1908-10-07
•
Granted: 1909-03-30
•
Expires: 1928-10-07
Abstract
No abstract record available.
Inventors
- 👤 Walter B Mclarty
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 20:29
CPC Classifications
F; F41; F41A; F41A19/00; F41A19/58; F41A19/64; F41A19/65; F23; F23N; F23N1/00; F23N1/02
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) | 1912-03-29 | 1912-09-28 | 1913-03-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1916-03-29 | 1916-09-28 | 1917-03-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1920-03-29 | 1920-09-28 | 1921-03-30 | $7700.00 | Window Closed / Lapsed |