Patent US2169638A successfully refreshed from Google Patents.
US2169638A
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Assignee: SHELLMAR PRODUCTS Co
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Filing: 1938-07-16
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Granted: 1939-08-15
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Expires: 1958-07-16
Abstract
No abstract record available.
Inventors
- 👤 Paul M Gilfillan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 03:37
CPC Classifications
B; B65; B65D; B65D75/00; B65D75/38; Y; Y10; Y10T; Y10T156/00; Y10T156/10; Y10T156/1002; Y10T156/1043; Y10T156/1044; Y10T156/1048; Y10T156/1052; Y10T156/1084; Y10T156/1087; Y10T156/17; Y10T156/1702; Y10T156/1712; Y10T156/1722; Y10T156/1724; Y10T428/00; Y10T428/24; Y10T428/24777
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) | 1942-08-14 | 1943-02-13 | 1943-08-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1946-08-14 | 1947-02-13 | 1947-08-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1950-08-14 | 1951-02-13 | 1951-08-15 | $7700.00 | Window Closed / Lapsed |