US998620A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fireproof door.
Assignee: Individual
•
Filing: 1911-02-18
•
Granted: 1911-07-25
•
Expires: 1931-02-18
Abstract
No abstract record available.
Inventors
- 👤 Elof R Leonard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 05:35
CPC Classifications
E; E06; E06B; E06B3/00; E06B3/54; E06B3/58; E06B3/5892; E06B3/96; E06B3/964; E06B3/9649
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
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) | 1914-07-24 | 1915-01-23 | 1915-07-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1918-07-24 | 1919-01-23 | 1919-07-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1922-07-24 | 1923-01-23 | 1923-07-25 | $7700.00 | Window Closed / Lapsed |