US2447569A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Tubulating machine
Assignee: Individual
•
Filing: 1944-01-20
•
Granted: 1948-08-24
•
Expires: 1964-01-20
Abstract
No abstract record available.
Inventors
- 👤 Eisler Charles
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 09:34
CPC Classifications
C; C03; C03B; C03B23/00; C03B23/20; C03B23/207; C03B23/213; Y; Y10; Y10T; Y10T279/00; Y10T279/17; Y10T279/17564; Y10T279/17598; Y10T279/18
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1621359A
Cited
US1742153A
Cited
US1813105A
Cited
US2023628A
Cited
GB363916A
Cited
GB368419A
Cited
US2151840A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1951-08-24 | 1952-02-23 | 1952-08-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-08-24 | 1956-02-23 | 1956-08-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-08-24 | 1960-02-23 | 1960-08-24 | $7700.00 | Window Closed / Lapsed |