US2591383A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Plastic-sealing element
Assignee: Individual
•
Filing: 1950-03-11
•
Granted: 1952-04-01
•
Expires: 1970-03-11
Abstract
No abstract record available.
Inventors
- 👤 Kenneth F Spalding
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 19:23
CPC Classifications
B; B29; B29C; B29C65/00; B29C65/02; B29C65/18; B29C65/22; B29C65/221; B29C65/224; B29C65/226; B29C65/228; B29C65/24; B29C65/30; B29C66/00; B29C66/004; B29C66/0042; B29C66/0046; B29C66/00461; B29C66/01; B29C66/05; B29C66/10; B29C66/11; B29C66/112; B29C66/1122; B29C66/40; B29C66/41; B29C66/43; B29C66/70; B29C66/73; B29C66/739; B29C66/7392; B29C66/73921; B29C66/80; B29C66/81; B29C66/818; B29C66/8182; B29C66/81821; B29C66/83; B29C66/834; B29C66/8341; B29C66/83411; B29C66/83413; B29C66/87; B29C66/876; B29C70/00; B29C70/04; B29C70/06; B29C70/10; B29C70/12; B29C66/812; B29C66/8122; Y; Y10; Y10S; Y10S277/00; Y10S277/922; Y10T; Y10T428/00; Y10T428/21; Y10T428/215; Y10T428/26; Y10T428/29; Y10T428/2913; Y10T428/2933; Y10T428/31504; Y10T428/31652; Y10T428/31663
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2258222A
Cited
US2427183A
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US2424558A
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US2459653A
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US2470593A
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US2525070A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-04-01 | 1955-10-01 | 1956-04-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-04-01 | 1959-10-01 | 1960-04-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-04-01 | 1963-10-01 | 1964-04-01 | $7700.00 | Window Closed / Lapsed |