Patent US2977608A successfully refreshed from Google Patents.
US2977608A
Expired / Lapsed
US
⏱️ 0.0 years remaining
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Assignee: Individual
•
Filing: 1960-02-23
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Granted: 1961-04-04
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Expires: 1980-02-23
Abstract
No abstract record available.
Inventors
- 👤 Sr Edward H Brown
- 👤 William A Vernon
- 👤 Jr Edward H Brown
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 19:20
CPC Classifications
A; A01; A01K; A01K93/00; B; B63; B63C; B63C7/00; B63C7/26
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1516522A
Cited
US1993974A
Cited
US2490876A
Cited
US2545321A
Cited
US2602233A
Cited
US2941217A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-04-03 | 1964-10-03 | 1965-04-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-04-03 | 1968-10-03 | 1969-04-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-04-03 | 1972-10-03 | 1973-04-04 | $7700.00 | Window Closed / Lapsed |