Patent US3515019A successfully refreshed from Google Patents.
US3515019A
Expired / Lapsed
US
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Machine for cutting fiber glass boards to form ducts
Assignee: CLARENCE C TYER JR
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Filing: 1968-04-10
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Granted: 1970-06-02
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Expires: 1988-04-10
Abstract
No abstract record available.
Inventors
- 👤 Clarence C Tyer Jr
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 09:00
CPC Classifications
B; B29; B29C; B29C53/00; B29C53/02; B29C53/04; B29C53/06; B29C53/063; B26; B26D; B26D1/00; B29C37/00; B29C37/0053; B29C37/0057; Y; Y10; Y10S; Y10S83/00; Y10S83/929; Y10S83/953; Y10T; Y10T409/00; Y10T409/50; Y10T409/502624; Y10T83/00; Y10T83/02; Y10T83/0304; Y10T83/869; Y10T83/8745; Y10T83/8746
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-06-01 | 1973-12-01 | 1974-06-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-06-01 | 1977-12-01 | 1978-06-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-06-01 | 1981-12-01 | 1982-06-02 | $7700.00 | Window Closed / Lapsed |