US1550713A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Safety guard
Assignee: Individual
•
Filing: 1924-09-22
•
Granted: 1925-08-25
•
Expires: 1944-09-22
Abstract
No abstract record available.
Inventors
- 👤 Franklin W Springer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 04:18
CPC Classifications
E; E06; E06B; E06B9/00; E06B9/02; E06B9/06; E06B9/0607; E06B9/0615; E06B9/063; E06B9/0646; E06B9/0653; E06B9/0661
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) | 1928-08-24 | 1929-02-23 | 1929-08-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1932-08-24 | 1933-02-23 | 1933-08-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1936-08-24 | 1937-02-23 | 1937-08-25 | $7700.00 | Window Closed / Lapsed |