Patent US2491281A successfully refreshed from Google Patents.
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
2026-10-28 17:32
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
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
GB191026706A
Cited
US1612267A
Cited
US1650266A
Cited
FR634317A
Cited
FR34003E
Cited
FR679341A
Cited
US1827636A
Cited
US1900450A
Cited
US1930174A
Cited
US1974203A
Cited
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 |