Patent US2169936A successfully refreshed from Google Patents.
US2169936A
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Assignee: Thomas M Royal & Co
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Filing: 1938-10-29
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Granted: 1939-08-15
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Expires: 1958-10-29
Abstract
No abstract record available.
Inventors
- 👤 Wagner Melvin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 16:43
CPC Classifications
B; B65; B65D; B65D31/00; B65D31/04; B29; B29C; B29C53/00; B29C53/36; B29C53/38; B29C53/48; B29C53/50; B65D31/02; B31; B31B; B31B2155/00; B31B2155/001; B31B2155/0012; B31B2170/00; B31B2170/20; Y; Y10; Y10T; Y10T156/00; Y10T156/10; Y10T156/1002; Y10T156/1007; Y10T156/1008; Y10T156/101; Y10T156/1036; Y10T156/1038
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 |