US2564611A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Heat sealing apparatus
Assignee: Individual
•
Filing: 1949-03-30
•
Granted: 1951-08-14
•
Expires: 1969-03-30
Abstract
No abstract record available.
Inventors
- 👤 Jr Herbert Rumsey
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 13:59
CPC Classifications
B; B29; B29C; B29C65/00; B29C65/02; B29C65/18; B29C65/24; B29C65/245; B29C65/30; B29C65/305; B29C66/00; B29C66/01; B29C66/05; B29C66/10; B29C66/11; B29C66/112; B29C66/1122; B29C66/20; B29C66/21; B29C66/40; B29C66/41; B29C66/43; B29C66/80; B29C66/81; B29C66/814; B29C66/8141; B29C66/81427; B29C66/81429; B29C66/83; B29C66/834; B29C66/8351; B29C66/83511; B29C66/70; B29C66/71
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US241997A
Cited
US2002079A
Cited
US2117452A
Cited
US2004041A
Cited
US2097427A
Cited
US2322298A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-08-13 | 1955-02-12 | 1955-08-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-08-13 | 1959-02-12 | 1959-08-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-08-13 | 1963-02-12 | 1963-08-14 | $7700.00 | Window Closed / Lapsed |