Patent US1779638A successfully refreshed from Google Patents.
US1779638A
Expired / Lapsed
US
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Polishing-wheel-heading machine
Assignee: Divine Brothers Co
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Filing: 1928-03-19
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Granted: 1930-10-28
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Expires: 1948-03-19
Abstract
No abstract record available.
Inventors
- 👤 Robert G Pilkington
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 22:28
CPC Classifications
B; B24; B24D; B24D18/00; B24D18/0072
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) | 1933-10-27 | 1934-04-28 | 1934-10-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1937-10-27 | 1938-04-28 | 1938-10-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1941-10-27 | 1942-04-28 | 1942-10-28 | $7700.00 | Window Closed / Lapsed |