US3501644A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Radiation sensitive bowling pin sensor
Assignee: AMF Bowling Companies Inc
•
Filing: 1967-05-31
•
Granted: 1970-03-17
•
Expires: 1987-05-31
Abstract
No abstract record available.
Inventors
- 👤 Robert M Berler
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 15:24
CPC Classifications
A; A63; A63D; A63D5/00; A63D5/04
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2521946A
Cited
US3005916A
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US3072798A
Cited
US3184847A
Cited
US3140872A
Cited
US3333184A
Cited
US3309086A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-03-16 | 1973-09-15 | 1974-03-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-03-16 | 1977-09-15 | 1978-03-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-03-16 | 1981-09-15 | 1982-03-17 | $7700.00 | Window Closed / Lapsed |