Patent US3881541A successfully refreshed from Google Patents.
US1553554A
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Method of making hollow rubber articles
Assignee: PARAMOUNT RUBBER Co CONS
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Filing: 1922-08-05
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Granted: 1925-09-15
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Expires: 1942-08-05
Abstract
No abstract record available.
Inventors
- 👤 Roberts Fred Thomas
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 06:11
CPC Classifications
B; B29; B29C; B29C51/00; B29C51/26; B29C51/266; B29C51/267; B29C65/00; B29C65/02; B29C65/34; B29C66/00; B29C66/01; B29C66/05; B29C66/10; B29C66/13; B29C66/131; B29C66/1312; B29C66/50; B29C66/51; B29C66/54; B29C66/70; B29C66/71; B29D; B29D22/00; B29C2791/00; B29C2791/004; B29C2791/006; B29K; B29K2021/00; B29L; B29L2022/00; Y; Y10; Y10T; Y10T156/00; Y10T156/10; Y10T156/1002; Y10T156/1025; Y10T156/1052
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) | 1928-09-14 | 1929-03-16 | 1929-09-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1932-09-14 | 1933-03-16 | 1933-09-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1936-09-14 | 1937-03-16 | 1937-09-15 | $7700.00 | Window Closed / Lapsed |