US2492530A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sealing device
Assignee: PERMO SEAL PLASTICS CORP
•
Filing: 1946-03-07
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Granted: 1949-12-27
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Expires: 1966-03-07
Abstract
No abstract record available.
Inventors
- 👤 Kriegsheim William
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 11:18
CPC Classifications
B; B29; B29C; B29C66/00; B29C66/80; B29C66/83; B29C66/834; B29C66/8351; B29C66/83531; B29C66/83533; B29C59/00; B29C59/02; B29C65/00; B29C65/02; B29C65/04; B29C66/01; B29C66/05; B29C66/10; B29C66/11; B29C66/112; B29C66/1122; B29C66/20; B29C66/22; B29C66/229; B29C66/306; B29C66/40; B29C66/41; B29C66/43; B29C66/81; B29C66/814; B29C66/8141; B29C66/81411; B29C66/81421; B29C66/81422; B29C66/81427; B29C66/70; B29C66/71; B29C66/816; B29C66/8167; B29C66/82; B29C66/822; B29C66/8223
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) | 1952-12-26 | 1953-06-27 | 1953-12-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-12-26 | 1957-06-27 | 1957-12-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-12-26 | 1961-06-27 | 1961-12-27 | $7700.00 | Window Closed / Lapsed |