Patent US2233031A successfully refreshed from Google Patents.
US709607A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrical releaser for fire-doors, &c.
Assignee: Individual
•
Filing: 1897-03-16
•
Granted: 1902-09-23
•
Expires: 1917-03-16
Abstract
No abstract record available.
Inventors
- 👤 Henry Joseph Podlesak
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 07:01
CPC Classifications
E; E06; E06B; E06B7/00; E06B7/02; E06B7/08; E06B7/084; E05; E05F; E05F1/00; E05F1/002; E05F1/004; Y; Y10; Y10T; Y10T292/00; Y10T292/08; Y10T292/1043; Y10T292/1075; Y10T292/1082
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) | 1905-09-22 | 1906-03-24 | 1906-09-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1909-09-22 | 1910-03-24 | 1910-09-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1913-09-22 | 1914-03-24 | 1914-09-23 | $7700.00 | Window Closed / Lapsed |