Patent US337093A successfully refreshed from Google Patents.
US337093A
Expired / Lapsed
US
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Door-knob
Assignee: —
•
Filing: —
•
Granted: 1886-03-02
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Expires: 1903-03-02
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 07:57
CPC Classifications
E; E05; E05B; E05B1/00; E05B1/0007; Y; Y10; Y10S; Y10S70/00; Y10S70/31; Y10T; Y10T292/00; Y10T292/82; Y10T70/00; Y10T70/50; Y10T70/5611; Y10T70/5757; Y10T70/5832; Y10T70/70; Y10T70/7441; Y10T70/7486; Y10T70/7508; Y10T70/7559; Y10T70/7638; Y10T70/7644; Y10T74/00; Y10T74/20; Y10T74/20576; Y10T74/20732
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) | 1889-03-01 | 1889-08-31 | 1890-03-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1893-03-01 | 1893-08-31 | 1894-03-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1897-03-01 | 1897-08-31 | 1898-03-02 | $7700.00 | Window Closed / Lapsed |