US3548504A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sighting device for establishing a line of sight
Assignee: Individual
•
Filing: 1968-05-15
•
Granted: 1970-12-22
•
Expires: 1988-05-15
Abstract
No abstract record available.
Inventors
- 👤 Russell F Sykes
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 07:28
CPC Classifications
A; A63; A63B; A63B69/00; A63B69/36; A63B69/3614; A63B69/3676; A63B69/3685; A63B2225/00; A63B2225/76
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1349277A
Cited
US3042409A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-12-21 | 1974-06-22 | 1974-12-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-12-21 | 1978-06-22 | 1978-12-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-12-21 | 1982-06-22 | 1982-12-22 | $7700.00 | Window Closed / Lapsed |