US887591A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Manhole-locking device.
Assignee: Individual
•
Filing: 1907-06-24
•
Granted: 1908-05-12
•
Expires: 1927-06-24
Abstract
No abstract record available.
Inventors
- 👤 John H Cook
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 18:01
CPC Classifications
E; E03; E03B; E03B9/00; E03B9/02; E03B9/08; E03B9/10; Y; Y10; Y10S; Y10S70/00; Y10S70/32; Y10T; Y10T137/00; Y10T137/6851; Y10T137/6966; Y10T137/6991; Y10T137/6995; Y10T137/7021; Y10T292/00; Y10T292/08; Y10T292/1043; Y10T292/1075; Y10T292/1083; Y10T292/1091; Y10T70/00; Y10T70/50; Y10T70/5093; Y10T70/554; Y10T70/5562; Y10T70/5575; Y10T70/558; Y10T70/5584
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) | 1911-05-12 | 1911-11-11 | 1912-05-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1915-05-12 | 1915-11-11 | 1916-05-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1919-05-12 | 1919-11-11 | 1920-05-12 | $7700.00 | Window Closed / Lapsed |