US779388A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Heaving-plug.
Assignee: HENRY D MCCOY
•
Filing: 1903-12-01
•
Granted: 1905-01-03
•
Expires: 1923-12-01
Abstract
No abstract record available.
Inventors
- 👤 George W Barnes
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 22:16
CPC Classifications
E; E21; E21B; E21B33/00; E21B33/10; E21B33/13; E21B33/134
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) | 1908-01-03 | 1908-07-04 | 1909-01-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1912-01-03 | 1912-07-04 | 1913-01-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1916-01-03 | 1916-07-04 | 1917-01-03 | $7700.00 | Window Closed / Lapsed |