Patent US2850747A successfully refreshed from Google Patents.
Patent US2556609A successfully refreshed from Google Patents.
US2556609A
Expired / Lapsed
US
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Plastic welding device
Assignee: Individual
•
Filing: 1949-04-18
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Granted: 1951-06-12
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Expires: 1969-04-18
Abstract
No abstract record available.
Inventors
- 👤 Arkless Richard Smurthwaite
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 21:06
CPC Classifications
B; B29; B29C; B29C66/00; B29C66/80; B29C66/84; B29C66/861; B05; B05C; B05C17/00; B05C17/005; B05C17/00523; B05C17/00526; B05C17/0053; B05C17/00533; B05C17/00546; B29B; B29B13/00; B29B13/02; B29B13/022; B29C65/00; B29C65/02; B29C65/40; B29C66/83; B29C66/836; B29C66/8362; B29C65/10; B29C65/103; B29C66/01; B29C66/02; B29C66/024; B29C66/0242; Y; Y10; Y10S; Y10S264/00; Y10S264/75
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-06-11 | 1954-12-11 | 1955-06-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-06-11 | 1958-12-11 | 1959-06-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-06-11 | 1962-12-11 | 1963-06-12 | $7700.00 | Window Closed / Lapsed |