Patent US5643208A successfully refreshed from Google Patents.
Patent US1939700A successfully refreshed from Google Patents.
US1939700A
Expired / Lapsed
US
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Muzzle attachment for guns
Assignee: Individual
•
Filing: 1932-06-17
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Granted: 1933-12-19
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Expires: 1952-06-17
Abstract
No abstract record available.
Inventors
- 👤 Clarence F Hofstetter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 05:24
CPC Classifications
F; F41; F41A; F41A21/00; F41A21/32; F41A21/34
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) | 1936-12-18 | 1937-06-19 | 1937-12-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1940-12-18 | 1941-06-19 | 1941-12-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1944-12-18 | 1945-06-19 | 1945-12-19 | $7700.00 | Window Closed / Lapsed |