Patent US1573577A successfully refreshed from Google Patents.
US1573577A
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Method and apparatus for making flush-tank bulbs
Assignee: PARAMOUNT RUBBER CONS Inc
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Filing: 1924-03-15
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Granted: 1926-02-16
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Expires: 1944-03-15
Abstract
No abstract record available.
Inventors
- 👤 Roberts Fred Thomas
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 17:46
CPC Classifications
B; B29; B29D; B29D22/00; B29C; B29C65/00; B29C65/02; B29C65/74; B29C65/743; B29C65/7441; B29C66/00; B29C66/40; B29C66/41; B29C66/43; B29C66/432; B29C66/4326; B29C66/70; B29C66/71; B29C66/80; B29C66/83; B29C66/832; B29C66/8322; B29C69/00; B29C69/004; B29C70/00; B29C70/68; B29C70/72; B29K; B29K2021/00; B29L; B29L2022/00; Y; Y10; Y10T; Y10T156/00; Y10T156/10; Y10T156/1002; Y10T156/1028; Y10T156/1031; Y10T156/1052; Y10T156/1054
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) | 1929-02-15 | 1929-08-17 | 1930-02-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1933-02-15 | 1933-08-17 | 1934-02-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1937-02-15 | 1937-08-17 | 1938-02-16 | $7700.00 | Window Closed / Lapsed |