Patent US1142779A successfully refreshed from Google Patents.
Patent US1801085A successfully refreshed from Google Patents.
US1801085A
Expired / Lapsed
US
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Machinery for making hollow rubber balls
Assignee: PENNSYLVANIA RUBBER Co
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Filing: 1930-05-16
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Granted: 1931-04-14
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Expires: 1950-05-16
Abstract
No abstract record available.
Inventors
- 👤 Walter E Humphrey
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 20:53
CPC Classifications
B; B29; B29D; B29D22/00; B29D22/04; B29C; B29C65/00; B29C65/78; B29C65/80; B29C66/00; B29C66/01; B29C66/02; B29C66/022; B29C66/0224; B29C66/02245; B29C66/50; B29C66/51; B29C66/54; B29C66/70; B29C66/71; B29K; B29K2021/00; B29L; B29L2031/00; B29L2031/54; Y; Y10; Y10S; Y10S425/00; Y10S425/806; Y10T; Y10T83/00; Y10T83/465; Y10T83/4766; Y10T83/4795; Y10T83/483; Y10T83/4836
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) | 1934-04-13 | 1934-10-13 | 1935-04-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1938-04-13 | 1938-10-13 | 1939-04-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1942-04-13 | 1942-10-13 | 1943-04-14 | $7700.00 | Window Closed / Lapsed |