Patent US1573515A successfully refreshed from Google Patents.
US1573515A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Rear sight for high-velocity weapons
Assignee: Individual
•
Filing: 1922-10-18
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Granted: 1926-02-16
•
Expires: 1942-10-18
Abstract
No abstract record available.
Inventors
- 👤 John W Harkom
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 20:16
CPC Classifications
F; F41; F41G; F41G1/00; F41G1/06; F41G1/16; F41G1/24; Y; Y10; Y10T; Y10T24/00; Y10T24/21; Y10T24/2102; Y10T24/2119
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) | 1929-02-15 | 1929-08-17 | 1930-02-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1933-02-15 | 1933-08-17 | 1934-02-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1937-02-15 | 1937-08-17 | 1938-02-16 | $7700.00 | Window Closed / Lapsed |