US2453404A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for making plastic masses
Assignee: Individual
•
Filing: 1945-06-01
•
Granted: 1948-11-09
•
Expires: 1965-06-01
Abstract
No abstract record available.
Inventors
- 👤 Walter S Bohlman
- 👤 David S Bruce
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 12:11
CPC Classifications
B; B29; B29B; B29B7/00; B29B7/30; B29B7/58; B29B7/62; Y; Y10; Y10S; Y10S428/00; Y10S428/922; Y10S428/9335; Y10S428/934; Y10S428/935; Y10T; Y10T428/00; Y10T428/12; Y10T428/12493; Y10T428/12771; Y10T428/12806; Y10T428/12826; Y10T428/12847; Y10T428/12854
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
DE256572C
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US2412698A
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US2286966A
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US2248530A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1951-11-09 | 1952-05-10 | 1952-11-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-11-09 | 1956-05-10 | 1956-11-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-11-09 | 1960-05-10 | 1960-11-09 | $7700.00 | Window Closed / Lapsed |