Patent US3777784A successfully refreshed from Google Patents.
Patent US1809802A successfully refreshed from Google Patents.
US1809802A
Expired / Lapsed
US
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Method of building conduits
Assignee: Goodyear Tire and Rubber Co
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Filing: 1929-04-15
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Granted: 1931-06-09
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Expires: 1949-04-15
Abstract
No abstract record available.
Inventors
- 👤 Louis H Gladwin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 15:24
CPC Classifications
B; B29; B29D; B29D23/00; B29D23/001; B29C; B29C63/00; B29C63/02; B29C63/04; B29C63/06; B29C63/065; B29K; B29K2021/00; B29K2105/00; B29K2105/06; B29L; B29L2023/00; B29L2023/005; Y; Y10; Y10S; Y10S118/00; Y10S118/11
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) | 1934-06-08 | 1934-12-08 | 1935-06-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1938-06-08 | 1938-12-08 | 1939-06-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1942-06-08 | 1942-12-08 | 1943-06-09 | $7700.00 | Window Closed / Lapsed |