US2749588A
Expired / Lapsed
US
⏱️ 0.0 years remaining
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Assignee: Individual
•
Filing: 1953-03-16
•
Granted: 1956-06-12
•
Expires: 1973-03-16
Abstract
No abstract record available.
Inventors
- 👤 Karl B Pliszczak
- 👤 Bruno T Plizak
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 06:51
CPC Classifications
A; A44; A44B; A44B1/00; A44B1/18; A44B1/28; Y; Y10; Y10T; Y10T24/00; Y10T24/36; Y10T24/3651; Y10T24/3655; Y10T24/366; Y10T24/46; Y10T24/4604; Y10T24/4605; Y10T24/4609; Y10T24/4611; Y10T24/4614; Y10T24/50
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
DE358549C
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US2621386A
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US666005A
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US818530A
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US1159022A
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GB206326A
Cited
US1462332A
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US1472681A
Cited
US1911935A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-06-12 | 1959-12-12 | 1960-06-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-06-12 | 1963-12-12 | 1964-06-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-06-12 | 1967-12-12 | 1968-06-12 | $7700.00 | Window Closed / Lapsed |