US2509882A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and apparatus for vulcanizing hollow rubber articles
Assignee: Individual
•
Filing: 1946-08-21
•
Granted: 1950-05-30
•
Expires: 1966-08-21
Abstract
No abstract record available.
Inventors
- 👤 Roberts Fred Thomas
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 22:05
CPC Classifications
B; B29; B29C; B29C51/00; B29C51/26; B29C51/30; B29C51/32; B29C49/00; B29C49/02; B29C49/06905; B29C49/0691; Y; Y10; Y10T; Y10T156/00; Y10T156/10; Y10T156/1002; Y10T156/1043; Y10T156/1052; Y10T156/1054
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US634302A
Cited
AT26573B
Cited
US1007434A
Cited
GB186893A
Cited
GB216072A
Cited
US1629582A
Cited
US2242795A
Cited
US2380370A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-05-29 | 1953-11-28 | 1954-05-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-05-29 | 1957-11-28 | 1958-05-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-05-29 | 1961-11-28 | 1962-05-30 | $7700.00 | Window Closed / Lapsed |