US2491281A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of making vulcanizing patches
Assignee: Individual
•
Filing: 1947-03-04
•
Granted: 1949-12-13
•
Expires: 1967-03-04
Abstract
No abstract record available.
Inventors
- 👤 Marion H Rowe
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 20:37
CPC Classifications
B; B29; B29C; B29C69/00; B29C69/001; B26; B26F; B26F1/00; B26F1/38; B26F1/3846; B29C53/00; B29C53/02; B29C53/04; B29C48/00; B29C48/03; B29C48/09; B29C48/10; B29C48/12; B29C73/00; B29C73/04; B29C73/10; B29K; B29K2021/00; B29L; B29L2030/00; Y; Y10; Y10S; Y10S206/00; Y10S206/813; Y10S206/82; Y10T; Y10T156/00; Y10T156/10; Y10T156/1002; Y10T156/1007; Y10T156/1008; Y10T428/00; Y10T428/24; Y10T428/2419; Y10T428/24215; Y10T428/31504; Y10T428/31815
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
GB191026706A
Cited
US1612267A
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US1650266A
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FR634317A
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FR34003E
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FR679341A
Cited
US1827636A
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US1900450A
Cited
US1930174A
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US1974203A
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US1960137A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-12-12 | 1953-06-13 | 1953-12-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-12-12 | 1957-06-13 | 1957-12-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-12-12 | 1961-06-13 | 1961-12-13 | $7700.00 | Window Closed / Lapsed |