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Patent US1977374A successfully refreshed from Google Patents.
US1977374A
Expired / Lapsed
US
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Method of making blocks of plastic material and apparatus therefor
Assignee: BERGEN BUILDING BLOCK Co
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Filing: 1927-08-06
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Granted: 1934-10-16
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Expires: 1947-08-06
Abstract
No abstract record available.
Inventors
- 👤 Brooke Howard
- 👤 George E Conway
- 👤 Hemy C Parker
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 13:37
CPC Classifications
B; B28; B28B; B28B5/00; B28B5/02; B28B5/021; B28B5/025; Y; Y10; Y10S; Y10S425/00; Y10S425/118
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) | 1937-10-15 | 1938-04-16 | 1938-10-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1941-10-15 | 1942-04-16 | 1942-10-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1945-10-15 | 1946-04-16 | 1946-10-16 | $7700.00 | Window Closed / Lapsed |