US2447568A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Machine for forming bottoms on glass tubes
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
2026-10-25 10:12
CPC Classifications
C; C03; C03B; C03B23/00; C03B23/04; C03B23/11; C03B23/112
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US621794A
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US1034419A
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US1330707A
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US1532077A
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US1816280A
Cited
GB282057A
Cited
US1735027A
Cited
US1914205A
Cited
US1981692A
Cited
US2101213A
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 |