US1470937A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Keyhole guard
Assignee: VANE SCHOU
•
Filing: 1921-11-26
•
Granted: 1923-10-16
•
Expires: 1941-11-26
Abstract
No abstract record available.
Inventors
- 👤 Frank W Schou
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 15:51
CPC Classifications
E; E05; E05B; E05B17/00; E05B17/14; E05B17/16; Y; Y10; Y10T; Y10T70/00; Y10T70/70; Y10T70/7441; Y10T70/7915; Y10T70/7955; Y10T70/796; Y10T70/7977; Y10T70/7983
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) | 1926-10-15 | 1927-04-16 | 1927-10-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1930-10-15 | 1931-04-16 | 1931-10-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1934-10-15 | 1935-04-16 | 1935-10-16 | $7700.00 | Window Closed / Lapsed |