US2698763A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Doorknob construction
Assignee: National Brass Co
•
Filing: 1949-09-12
•
Granted: 1955-01-04
•
Expires: 1969-09-12
Abstract
No abstract record available.
Inventors
- 👤 Young Herbert
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 23:03
CPC Classifications
E; E05; E05B; E05B55/00; E05B55/005; Y; Y10; Y10T; Y10T292/00; Y10T292/82; Y10T70/00; Y10T70/50; Y10T70/5611; Y10T70/5757; Y10T70/5832
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US806854A
Cited
US2012911A
Cited
US1910859A
Cited
US2264239A
Cited
US2294213A
Cited
US2547439A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1958-01-03 | 1958-07-05 | 1959-01-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-01-03 | 1962-07-05 | 1963-01-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-01-03 | 1966-07-05 | 1967-01-04 | $7700.00 | Window Closed / Lapsed |