Patent US2388568A successfully refreshed from Google Patents.
US2388568A
Expired / Lapsed
US
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Sealing composition
Assignee: Individual
•
Filing: 1942-03-04
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Granted: 1945-11-06
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Expires: 1962-03-04
Abstract
No abstract record available.
Inventors
- 👤 Nicholas J Penning
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 21:06
CPC Classifications
C; C09; C09K; C09K3/00; C09K3/10; B; B65; B65D; B65D41/00; B65D41/02; B65D41/10; B65D41/12; C08; C08L; C08L97/00; C08L97/02; C09K2200/00; C09K2200/06; C09K2200/0605; C09K2200/0607; Y; Y10; Y10T; Y10T428/00; Y10T428/21; Y10T428/215
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1948-11-05 | 1949-05-07 | 1949-11-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1952-11-05 | 1953-05-07 | 1953-11-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1956-11-05 | 1957-05-07 | 1957-11-06 | $7700.00 | Window Closed / Lapsed |