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Patent US754721A successfully refreshed from Google Patents.
US754721A
Expired / Lapsed
US
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Assignee: Individual
•
Filing: 1903-04-22
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Granted: 1904-03-15
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Expires: 1923-04-22
Abstract
No abstract record available.
Inventors
- 👤 Daniel W Tower
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 23:06
CPC Classifications
E; E05; E05C; E05C3/00; E05C3/12; E05C3/16; E05C3/22; E05C3/30; Y; Y10; Y10S; Y10S292/00; Y10S292/37; Y10S70/00; Y10S70/67; Y10T; Y10T292/00; Y10T292/08; Y10T292/0911; Y10T292/0926; Y10T292/0928; Y10T292/0933
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) | 1907-03-15 | 1907-09-14 | 1908-03-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1911-03-15 | 1911-09-14 | 1912-03-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1915-03-15 | 1915-09-14 | 1916-03-15 | $7700.00 | Window Closed / Lapsed |