US2173529A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Barrel-tapping apparatus
Assignee: Individual
•
Filing: 1938-03-10
•
Granted: 1939-09-19
•
Expires: 1958-03-10
Abstract
No abstract record available.
Inventors
- 👤 Beecher Valentine
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 10:01
CPC Classifications
B; B67; B67D; B67D1/00; B67D1/08; B67D1/0829; B67D1/0831; Y; Y10; Y10T; Y10T137/00; Y10T137/598; Y10T137/612; Y10T137/613; Y10T137/7722; Y10T137/7837; Y10T137/7879; Y10T137/788; Y10T137/7882; Y10T137/8593; Y10T137/87917; Y10T137/88054
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) | 1942-09-18 | 1943-03-20 | 1943-09-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1946-09-18 | 1947-03-20 | 1947-09-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1950-09-18 | 1951-03-20 | 1951-09-19 | $7700.00 | Window Closed / Lapsed |