US2464585A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Drafting machine
Assignee: Keuffel and Esser Co
•
Filing: 1944-05-24
•
Granted: 1949-03-15
•
Expires: 1964-05-24
Abstract
No abstract record available.
Inventors
- 👤 Ketting Leendert
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 13:40
CPC Classifications
B; B43; B43L; B43L13/00; B43L13/02; B43L13/08; Y; Y10; Y10T; Y10T292/00; Y10T292/08; Y10T292/0911; Y10T292/0926; Y10T292/0928; Y10T292/0931; Y10T74/00; Y10T74/20; Y10T74/20576; Y10T74/20636
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US826971A
Cited
DE484526C
Cited
US2168940A
Cited
US2226882A
Cited
US2243731A
Cited
US2236656A
Cited
US2347625A
Cited
US2377429A
Cited
US2370971A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-03-14 | 1952-09-13 | 1953-03-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-03-14 | 1956-09-13 | 1957-03-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-03-14 | 1960-09-13 | 1961-03-15 | $7700.00 | Window Closed / Lapsed |